In this paper I argue that ethics and evidence are intricately intertwined within the clinical practice of differential diagnosis. Too often, when a disease is difficult to diagnose, a physician will dismiss it as being “not real” or “all in the patient’s head.” This is both an ethical and an evidential problem. In the paper my aim is two-fold. First, via the examination of two case studies (late-stage Lyme disease and Addison’s disease), I try to elucidate why this (...) kind of dismissal takes place. Then, I propose a potential solution to the problem. I argue that instead of dismissing a patient’s illness as “not real,” physicians ought to exercise a compassionate suspension of judgment when a diagnosis cannot be immediately made. I argue that suspending judgment has methodological, epistemic, and ethical virtues and therefore should always be preferred to patient dismissal in the clinical setting. (shrink)

This paper presents a case in whom a differential diagnosis of akinetic mutism with a disorder of consciousness was made using diffusion tensor tractography. A 69-year-old female patient was diagnosed with subarachnoid hemorrhage, intraventricular hemorrhage, and intracerebral hemorrhage produced by the subarachnoid hemorrhage. She exhibited impaired consciousness with a Coma Recovery Scale-Revised score of 13 until 1 month after onset. Her impaired consciousness recovered slowly to a normal state according to the Coma Recovery Scale-Revised at 7 weeks after (...) onset. On the other hand, she exhibited the typical clinical features of akinetic mutism. On the DTT performed at 1-month, the upper, and lower dorsal ascending reticular activating systems, which are related to a disorder of consciousness, showed an almost normal state. In contrast, the prefronto-caudate and prefronto-thalamic tracts, which are related to akinetic mutism, showed severe injuries. These DTT results suggested that the patient's main clinical features were not a disorder of consciousness but akinetic mutism. Therefore, DTT for the ascending reticular activating system, and the prefronto-caudate and prefronto-thalamic tracts could provide additional evidence for a differential diagnosis of DOC and AM at the early stages of stroke. (shrink)

In considering the argument that Thomas Szasz advances on behalf of his claim that there is no mental illness, it becomes evident that despite his stated assumptions, moral valuations are necessarily tied up with assessment of disease. By following his remarks about differential diagnosis, it becomes evident that behavior is the occasion for differential diagnosis, that behavior determines which anatomical deviations are counted as diseases, and that Szasz's insistence on autonomy introduces his own moral assumptions into (...) the concept of disease. Consequently, although none of these considerations disproves Szasz's conclusions about the existence of mental illness, neither can his argument support the weight of that conclusion. CiteULike Connotea Del.icio.us What's this? (shrink)

Communication problems are often the first noticeable symptom of developmental abnormalities. About 15% of children at the age of 2 years demonstrate a lower level of speech expression than their peers. Speech development disorders may constitute either symptoms of global developmental delay or only isolated difficulties. One of the main challenges for professionals dealing with early development support is recognizing whether a child whose linguistic competence differs significantly from that of their peers suffers from a specific language impairment, or whether (...) they belong to the group of ‘late bloomers’ who at some point, without the intervention of a specialist, will achieve an appropriate level of communication skills. Although a differential diagnosis can be extremely difficult, the analysis of the literature leads to the conclusion that there are some markers that can aid a specialist in establishing an accurate diagnosis. (shrink)

Medical diagnosis has been traditionally recognized as a privileged field of application for so called probabilistic induction. Consequently, the Bayesian theorem, which mathematically formalizes this form of inference, has been seen as the most adequate tool for quantifying the uncertainty surrounding the diagnosis by providing probabilities of different diagnostic hypotheses, given symptomatic or laboratory data. On the other side, it has also been remarked that differential diagnosis rather works by exclusion, e.g. by modus tollens, i.e. deductively. (...) By drawing on a case history, this paper aims at clarifying some points on the issue. Namely: 1) Medical diagnosis does not represent, strictly speaking, a form of induction, but a type, of what in Peircean terms should be called ‘abduction’ (identifying a case as the token of a specific type); 2) in performing the single diagnostic steps, however, different inferential methods are used for both inductive and deductive nature: modus tollens, hypothetical-deductive method, abduction; 3) Bayes’ theorem is a probabilized form of abduction which uses mathematics in order to justify the degree of confidence which can be entertained on a hypothesis given the available evidence; 4) although theoretically irreconcilable, in practice, both the hypothetical- deductive method and the Bayesian one, are used in the same diagnosis with no serious compromise for its correctness; 5) Medical diagnosis, especially differential diagnosis, also uses a kind of “probabilistic modus tollens”, in that, signs (symptoms or laboratory data) are taken as strong evidence for a given hypothesis not to be true: the focus is not on hypothesis confirmation, but instead on its refutation [Pr (¬ H/E1, E2, …, En)]. Especially at the beginning of a complicated case, odds are between the hypothesis that is potentially being excluded and a vague “other”. This procedure has the advantage of providing a clue of what evidence to look for and to eventually reduce the set of candidate hypotheses if conclusive negative evidence is found. 6) Bayes’ theorem in the hypothesis-confirmation form can more faithfully, although idealistically, represent the medical diagnosis when the diagnostic itinerary has come to a reduced set of plausible hypotheses after a process of progressive elimination of candidate hypotheses; 7) Bayes’ theorem is however indispensable in the case of litigation in order to assess doctor’s responsibility for medical error by taking into account the weight of the evidence at his disposal. (shrink)

I suggest that the diagnosis that an individual self-diagnoses with can be influenced by levels of public awareness. Accurate diagnosis requires consideration of multiple diagnoses. Sometimes, different diagnoses can overlap with one another and can only be differentiated in subtle and nuanced ways, but particular diagnoses vary considerably in levels of public awareness. As such, an individual may meet the diagnostic criteria for one diagnosis but self-diagnoses with a different diagnosis because it is better known. I (...) then outline a potential negative consequence of this. Psychiatric diagnoses can grant access to what I call social resources, namely, political advocacy, campaigning for support, participating in scientific research, building diagnostic cultures, and opportunity for social interactions with people who have the same diagnosis. The strength of the social resources for a particular diagnosis can be made stronger when more people have that diagnosis. As such, inaccurate self-diagnosis can result in the social resources for one diagnosis being strengthened whilst not being strengthened in relation to another diagnosis in comparison to accurate diagnosis. This shows how inaccurate self-diagnosis can alter the distribution of social resources. We need to consider whether this is unfair to people who are diagnosed with less well-known conditions. (shrink)

Background and purposeWe previously established a radiological protocol to discriminate multiple system atrophy-parkinsonian subtype from Parkinson’s disease. However, we do not know if it can differentiate early stage disease. This study aimed to investigate whether the morphological and intensity changes in susceptibility weighted imaging of the lentiform nucleus could discriminate MSA-P from PD at early stages.MethodsWe retrospectively enrolled patients with MSA-P, PD and sex- and age-matched controls whose brain MRI included SWI, between January 2015 and July 2020 at the Movement (...) Disorder Center. Two specialists at the center reviewed the medical records and made the final diagnosis, and two experienced neuroradiologists performed MRI analysis, based on a defined and revised protocol for conducting morphological measurements of the LN and signal intensity.ResultsNineteen patients with MSA-P and 19 patients with PD, with less than 2 years of disease duration, and 19 control individuals were enrolled in this study. We found that patients with MSA- P presented significantly decreased size in the short line and corrected short line, ratio of the SL to the long line and corrected SLLr of the LN, increased standard deviation of signal intensity compared to patients with PD and controls. With receiver operating characteristic analysis, this finding had a sensitivity of 89.5% and a specificity of 73.7% to distinguish MSA- P from PD.ConclusionCompared to PD and controls, patients with MSA-P are characterized by a narrowing morphology of the posterior region of the LN. Quantitative morphological changes provide a reference for clinical auxiliary diagnosis. (shrink)

RESUMEN Se desarrolló una investigación descriptiva transversal, con un enfoque cuantitativo, en la que la muestra fue seleccionada de manera intencional pura, no probabilística, según criterios establecidos por los autores del estudio. Quedó constituida por las variables del Sistema Comprehensivo Rorschach pertenecientes a 120 protocolos de sujetos con trastornos depresivos, de ellos 82 presentaron depresión moderada, y 38 depresión severa. Se aplicaron los siguientes métodos empíricos: entrevista, observación, Autoescala de Zung y Conde, y el Psicodiagnóstico de Rorschach. Los estadígrafos que (...) se utilizaron fueron el Test de Kolmogorov- Smirnov, el Test de Comparación de Proporciones y la prueba de Mann-Whitney. Como principales resultados se obtuvo que las variables del Sistema Comprehensivo Rorschach, que establecieron diferencias estadísticas altamente significativas entre los grupos de sujetos fueron: Lambda alta, Proporción afectiva baja, total de respuestas, las respuestas globales, Suma Ponderada de respuestas con el determinante color cromático y la Experiencia accesible. ABSTRACT A transverse descriptive investigation was developed, with a quantitative approach, in that the sample was selected in a pure intentional way, not probabilistic, according to criteria established by the authors of the study. It was constituted for the variables of the Rorschach Comprehensive System belonging to 120 protocols of individuals with depressive disorders, of them 82 presented moderate depression, and 38 severe depression. The following empirical methods were applied: interview, observation, Auto-scale of Zung and Conde, and Psycho-diagnosis of Rorschach. The statisticians used were the Test of Kolmogorov - Smirnov, the Test of Comparison of Proportions and the Mann-Whitney test. As main results, it was obtained that the variables of the Rorschach Comprehensive System, which established highly significant statistical differences between the groups of individuals were: tall Lambda, low affective proportion, whole of answers, the global answers, exaggerated sum of answers with the determinant chromatic color and the accessible experience. (shrink)

There are indications that the interpersonal affective factor and the social deviation factor, both of which are underlying dimensions of psychopathy, have a positive and a negative relationship, respectively, with executive functioning. However, this is seldom taken into consideration in the research on the relationship between executive functioning and psychopathy, which may be an explanation for the many inconsistent results in this area as reported in the literature (e.g., Rogers, 2006). In the present study, executive functioning was studied using the (...) Wisconsin Card Sorting Test (WCST) in 53 inpatients of a Dutch forensic psychiatric clinic who were classified by means of the Psychopathy Checklist-Revised (PCL-R). Special attention was given to the relationship between the two separate factors and executive functioning. Age, educational level, and substance abuse were controlled for in the analysis. No difference was found between psychopathic (N = 17) and nonpsychopathic (N = 36) patients in the WCST scoring categories, nor was there a significant difference in the four diagnostic subgroups defined by the two factors. However, the trends observed do justify further study in this direction. (shrink)

In the big data era, sequencing technology has produced a large number of biological sequencing data. Different views of the cancer genome data provide sufficient complementary information to explore genetic activity. The identification of differentially expressed genes from multiview cancer gene data is of great importance in cancer diagnosis and treatment. In this paper, we propose a novel method for identifying differentially expressed genes based on tensor robust principal component analysis, which extends the matrix method to the processing of (...) multiway data. To identify differentially expressed genes, the plan is carried out as follows. First, multiview data containing cancer gene expression data from different sources are prepared. Second, the original tensor is decomposed into a sum of a low-rank tensor and a sparse tensor using TRPCA. Third, the differentially expressed genes are considered to be sparse perturbed signals and then identified based on the sparse tensor. Fourth, the differentially expressed genes are evaluated using Gene Ontology and Gene Cards tools. The validity of the TRPCA method was tested using two sets of multiview data. The experimental results showed that our method is superior to the representative methods in efficiency and accuracy aspects. (shrink)

IntroductionCerebral visual impairment is an important cause of visual impairment in western countries. Perinatal hypoxic-ischemic damage is the most frequent cause of CVI but CVI can also be the result of a genetic disorder. The majority of children with CVI have cerebral palsy and/or developmental delay. Early diagnosis is crucial; however, there is a need for consensus on evidence based diagnostic tools and referral criteria. The aim of this study is to develop guidelines for diagnosis and referral in (...) CVI according to the grade method.Patients and MethodsWe developed the guidelines according to the GRADE method 5 searches on CVI were performed in the databases Medline, Embase, and Psychinfo, each with a distinct topic.ResultsBased on evidence articles were selected on five topics: 1. Medical history and CVI-questionnaires 23. 2. Ophthalmological and orthoptic assessment 37. 3. Neuropsychological assessment 5. 4. Neuroradiological evaluation and magnetic resonance imaging 9. 5. Genetic assessment 5.ConclusionIn medical history taking, prematurity low birth weight and APGAR Scores are important. Different questionnaires are advised for children under the age of 3 years, older children and for specific risk groups. In ophthalmological examination, eye movements, specially saccades, accommodation, crowding, contrast sensitivity and visual fields should be evaluated. OCT can show objective signs of trans-synaptic degeneration and abnormalities in fixation and saccades can be measured with eye tracking. Screening of visual perceptive functioning is recommended and can be directive for further assessment. MRI findings in CVI in Cerebral Palsy can be structured in five groups: Brain maldevelopment, white and gray matter lesions, postnatal lesions and a normal MRI. In children with CVI and periventricular leukomalacia, brain lesion severity correlates with visual function impairment. A differentiation can be made between cortical and subcortical damage and related visual function impairment. Additional assessments can be necessary to complete the diagnosis of CVI and/or to reveal the etiology. (shrink)

The diagnosis of Functional Neurological Disorder (FND) requires differentiation from other neurologic diseases/syndromes, and from the comparatively rare diagnosis of feigning (Malingering and Factitious Disorder). Analyzing the process of diagnosing FND reveals a necessary element of presumption, which I propose underlies some of the uncertainty, discomfort, and stigma associated with this diagnosis. A conflict between the neurologist’s natural social cognition and professional judgement (cognitive dissonance) can be understood by applying a framework originally designed for the determination of (...) moral responsibility. Understanding the source of this cognitive dissonance may effect its alleviation, and in turn, allow more compassionate treatment of patients with FND. (shrink)

This paper articulates a dilemma posed by philosophical counseling literature that presupposes diagnostic recognition. In addition, guests often bring self-ascribed mental health diagnoses from their previous experience, and requests the philosophical counselor to de-diagnose or otherwise reinterpret their problems. Although philosophical counselors can do this, we cannot skirt philosophical diagnosis. The paper’s thesis is that it behooves philosophical counselors to differentiate these types of diagnosis and to know when we are doing one or the other, including the utilization (...) of diagnostic recognition. Anecdotes from the author’s philosophical counseling sessions are included to illustrate the discussion. The paper concludes that the space of philosophical diagnosis is neither incommensurate with, nor incompatible with clinical diagnosis. On the contrary, the space of philosophical diagnosis ought to harbor the possibility of clinical diagnostic recognition. The philosophical counselor’s repertoire of diagnostic intuitions should cultivate the intuitive recognition of clinical prototypes. (shrink)

This paper examines the philosophical substructure to the theoretical conflicts that permeate contemporary mental health care in the UK. Theoretical conflicts are treated here as those that arise among practitioners holding divergent theoretical orientations towards the phenomena being treated. Such conflicts, although steeped in history, have become revitalized by recent attempts at integrating mental health services that have forced diversely trained practitioners to work collaboratively together, often under one roof. Part I of this paper examines how the history of these (...) conflicts can be understood as a tension between, on the one hand, the medical model and its use by the dominant profession of psychiatry, and on the other, those alternative models and practitioners in some way differentiated from the medical model camp. Examples will be given from recent policy and research to highlight the prevalence of this tension in contemporary practice. Part II of this paper explores the deeper commonalities that lay beneath the theoretical conflict outlined in Part I. These commonalities will be shown to be apart of a captivating framework that has continued to grip the conflict since its inception. By exposing this underlying framework--and the motivations inherent therein--the topic of integration appears in wholly different light, allowing a renewed philosophical basis for integration to emerge. (shrink)

Overdiagnosis and disease are related concepts. Widened conceptions of disease increase overdiagnosis and vice versa. This is partly because there is a close and complex relationship between disease and overdiagnosis. In order to address the problems with overdiagnosis, we may benefit from a closer understanding this relationship. Accordingly, the objective of this article is to elucidate the relationship between disease and overdiagnosis. To do so, the article starts with scrutinizing how overdiagnosis can explain the expansion of the concept of disease. (...) Then it investigates how definitions of disease address various challenges of overdiagnosis. The article specifically investigates recent attempts to clarify the relationship between the concepts of disease and overdiagnosis. Several shortcomings are identified and lead to a closer analysis of overdiagnosis in the diagnostic process. Contrary to recent contributions to the field, it is argued that cases of overdiagnosis are not cases of disease. They are nonverified labelling of disease. It is revealed how overdiagnosis establishes an unwarranted link between indicative phenomena, such as polyps or cell changes, and harm, and thereby generates a link to disease. One implication of this study is that we should stop attributing disease language to indicative phenomena. That is, we should stop calling it "cancer screening" when we are actually searching for polyps. Another implications is that we should strive for scientific progress in differentiating phenomena that are of negative value to us from those that are not. In overdiagnosis we diagnose something that is not disease: it is over-diagnosis. (shrink)

Overdiagnosis and disease are related concepts. Widened conceptions of disease increase overdiagnosis and vice versa. This is partly because there is a close and complex relationship between disease and overdiagnosis. In order to address the problems with overdiagnosis, we may benefit from a closer understanding this relationship. Accordingly, the objective of this article is to elucidate the relationship between disease and overdiagnosis. To do so, the article starts with scrutinizing how overdiagnosis can explain the expansion of the concept of disease. (...) Then it investigates how definitions of disease address various challenges of overdiagnosis. The article specifically investigates recent attempts to clarify the relationship between the concepts of disease and overdiagnosis. Several shortcomings are identified and lead to a closer analysis of overdiagnosis in the diagnostic process. Contrary to recent contributions to the field, it is argued that cases of overdiagnosis are not cases of disease. They are non-verified labelling of disease. It is revealed how overdiagnosis establishes an unwarranted link between indicative phenomena, such as polyps or cell changes, and harm, and thereby generates a link to disease. One implication of this study is that we should stop attributing disease language to indicative phenomena. That is, we should stop calling it “cancer screening” when we are actually searching for polyps. Another implications is that we should strive for scientific progress in differentiating phenomena that are of negative value to us from those that are not. In overdiagnosis we diagnose something that is not disease: it is over-diagnosis. (shrink)

We argue that the causal theory of memory and the simulation theory of memory are not as straightforwardly incompatible as they are usually taken to be. Following a brief review of the theories, we describe alternative normative and descriptive perspectives on memory, arguing that the causal theory aligns better with the normative perspective and the simulation theory with the descriptive perspective. Taking explanatory contextualism about perception as our starting point, we then develop a form of explanatory contextualism about memory, arguing (...) that, depending on the context in which we find ourselves, either the normative perspective or the descriptive perspective may be appropriate. It follows that, while the causal theory and the simulation theory cannot both be right with respect to a given perspective, and while it is necessary to choose one perspective or the other in a given context, there an important sense in which we need not choose between causalism and simulationism. We conclude by differentiating our position from and critiquing a related position developed by Craver (2020) and defending our position against objections. (shrink)

In Germany the question whether to uphold or repeal the judicial prohibition on Pre-implantation Genetic Diagnosis is being debated from quite different standpoints. This paper differentiates the major arguments according to their reasons as a) moral, b) evaluative , and c) legal. The arguments for and against PGD can be divided by content into three groups: arguments relating to the status of the embryo, focusing on individual actions in the implementation of PGD, and relating to the foreseeable or probable (...) consequences of PGD.In Germany, from a legal perspective, the status of the embryo does not permit the intervention of PGD; from a purely moral perspective, a prohibition on PGD does not appear defensible. It remains an open question, however, whether the moral argument permitting PGD should be restricted for evaluative reasons. The paper discusses the species-ethical reasons, for which Jürgen Habermas sees worrisome consequences in the wake of PGD to the extent that we comprehend it as the forerunner of a ‘positive eugenics’. It would so disrupt the natural preconditions of our universal morality. The question of whether to prohibit or allow PGD is not merely a question of simple moral and/or legal arguments, but demands a choice between evaluative, moral and species-ethical arguments, and the question remains open. (shrink)

Differential diagnosis of motor symptoms, for example, akinesia, may be difficult in clinical neuropsychiatry. Symptoms may be either of neurologic origin, for example, Parkinson's disease, or of psychiatric origin, for example, catatonia, leading to a so-called “conflict of paradigms.” Despite their different origins, symptoms may appear more or less clinically similar. Possibility of dissociation between origin and clinical appearance may reflect functional brain organisation in general, and cortical-cortical/subcortical relations in particular. It is therefore hypothesized that similarities and differences (...) between Parkinson's disease and catatonia may be accounted for by distinct kinds of modulation between cortico-cortical and cortico-subcortical relations. Catatonia can be characterized by concurrent motor, emotional, and behavioural symptoms. The different symptoms may be accounted for by dysfunction in orbitofrontal-prefrontal/parietal cortical connectivity reflecting “horizontal modulation” of cortico-cortical relation. Furthermore, alteration in “top-down modulation” reflecting “vertical modulation” of caudate and other basal ganglia by GABA-ergic mediated orbitofrontal cortical deficits may account for motor symptoms in catatonia. Parkinson's disease, in contrast, can be characterized by predominant motor symptoms. Motor symptoms may be accounted for by altered “bottom-up modulation” between dopaminergic mediated deficits in striatum and premotor/motor cortex. Clinical similarities between Parkinson's disease and catatonia with respect to akinesia may be related with involvement of the basal ganglia in both disorders. Clinical differences with respect to emotional and behavioural symptoms may be related with involvement of different cortical areas, that is, orbitofrontal/parietal and premotor/motor cortex implying distinct kinds of modulation – “vertical” and “horizontal” modulation, respectively. Key Words: Bottom-up modulation; catatonia; horizontal modulation; Parkinson's disease; top-down modulation; vertical modulation. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Psychiatric Comorbidity:More Than a Kuhnian AnomalyPeter Zachar (bio)Keywordscomorbidity, classification, epidemiology, differential diagnosis, personality disorderDr. Aragona's article in this issue of Philosophy, Psychiatry, & Psychology makes some important points regarding the relationship between comorbidity rates and the classification system currently used in psychiatry. Particularly persuasive is his claim that observed patterns of comorbidity are, in important respects, consequences of the structure of the classification system. I am not (...) convinced, however, that comorbidity is best conceptualized as an artifact of the taxonic structure of the Diagnostic and Statistical Manual of Mental Disorders (DSM) and the International Classification of Diseases (ICD). Instead, I suggest that the use of dichotomies such as true versus artifactual should be used with caution when psychiatric classification is being discussed.In contrast with the artifact hypothesis, I argue that the phenomena covered by the term "comorbidity" are real, expectable features of the psychiatric domain. They are not the phlogiston and luminiferous ether of psychiatry. I am skeptical of the notion that high comorbidity rates as a whole can be understood as Kuhnian anomalies, or that there is a crisis, or that after a period of revolutionary science a new paradigm would eliminate these 'anomalies.' In short, high rates of comorbidity in psychiatry will not simply disappear once scientists develop a better nosological paradigm. High levels of comorbidity can, however, be both lowered and provided a better, evidence-based conceptual framework.Many Conditions, One OrganIn general medicine, comorbidity conventionally refers to the simultaneous occurrence of two independent disease processes or distinct clinical entities, such as heart disease and liver cancer (Feinstein, 1970; Jablensky 2004). The presence of one disease is supposed to affect the other in such a way that the co-occurrence of the two has implications for prognosis and treatment.Comorbidity in psychiatry is a broader concept, referring to a variety of conditions that overlap in multiple ways. The different kinds of overlap are amenable to detailed empirical analysis (e. g., Klein and Riso 1993; Neale and Kendler 1995). Depressive reactions to primary disorders, attention deficit symptoms associated with mania, panic attacks in the context of severe borderline personality disorder, substance abuse disorders among psychopaths, histrionic dynamics combined [End Page 13] with narcissistic personality traits, and emergent conditions such as schizoaffective disorder are all distinct types of comorbidity. The kinds of overlapping conditions just listed are sometimes termed psychiatric comorbidity. Also important is comorbidity between psychiatric disorders and general medical conditions as is studied in behavioral medicine and health psychology. The crisis, if there is one, is a crisis of comorbidities.The heart disease and liver cancer type of comorbidity as independent organ systems being affected is ruled out a priori in psychiatric comorbidity proper. In psychiatry, "psychopathological disease processes" can all be expected to affect a single organ, namely the brain or, more likely, affect the different systems that are tightly integrated in the brain. The tight integration can make putative comorbid psychiatric disorders difficult to disentangle.It is a widely held consensus that causes, not organ systems, are what matter in comorbidity. In this tradition, Dr. Aragona claims that in general medicine shared symptoms between two diseases (such as fever and fatigue) are not a problem because the diseases are differentiated with respect to etiology; in psychiatry, however, where syndromes are differentiated by a description of symptoms only, symptomatic overlap is a problem.Is descriptive psychopathology, therefore, a root cause of the "crisis of comorbidity" and should it be abandoned in favor of etiological classification? Unfortunately, forcing psychiatric nosology to conform to an etiological paradigm is unlikely to resolve the problem of psychiatric comorbidity. As noted, the problem is one of distinguishing between the different etiological disease processes that are affecting tightly integrated systems in the brain. The brain as a whole is a multilevel, dynamic, and open system, which has an ecology (Zachar 2000). As argued by Kendler (2005) and Schaffner (2002, 2008), it has not thus far, and may never be fully possible to segregate causes and their associated psychiatric disorders into parsimonious etiological packages. In the ecology of neuroscience, causes and effects tend to merge in a continuous series of common pathways.It would be foolish... (shrink)

This article argues in support of the proposition that “A Personality Disorder May Nullify Responsibility for a Criminal Act.” Building upon research in categorical and dimensional controversies in diagnosis, neurocognitive science and the behavioral genetics of mental disorders, and difficulties in differential diagnosis and co-morbidity with personality disorders, this article holds that a per se rule barring personality diagnosis as a basis for a defense of legal insanity is scientifically and conceptually indefensible. Rather, focus should be (...) upon the severity and impact in specific cases of any legally relevant functional deficits arising from a mental disorder (including personality disorders). Failure to do so risks potentially misleading “battles of the experts” about a defendant's diagnosis in criminal responsibility defenses and improper usurpation of the role of the legal finder of fact as mental health expert witnesses are inserted as gatekeepers indefensibly based upon diagnosis. Implications for practice and public policy are considered, including a “modest proposal” for post-trial management of defendants found not guilty by reason of insanity on the basis of functional deficits arising from personality disorder. (shrink)

Mistakes and errors happen in most spheres of human life and activity, including in medicine. A mistake can be as simple and benign as the collection of an extra and unnecessary urine sample. Or a mistake can cause serious but reversible harm, such as an overdose of insulin in a patient with diabetes, resulting in hypoglycemia, seizures, and coma. Or a mistake can result in serious and permanent damage for the patient, such as the failure to consider epiglottitis in an (...) initial differential diagnosis, resulting in a chronic vegetative state for a seven-year-old boy. Or a mistake can be an error in judgment that leads to a patient's death. (shrink)

Values-Based Medicine (VBM) is the theory and practice of clinical decision-making for situations in which legitimately different values are in play. VBM is thus to values what Evidence-Based Medicine (EBM) is to facts. The theoretical basis of VBM is a branch of analytic philosophy called philosophical value theory. As a set of practical tools, VBM has been developed to meet the challenges of value diversity as they arise particularly in psychiatry. These challenges are illustrated in this paper by a case (...) study of the differential diagnosis between delusion and religious experience. In a traditional model of scientific medicine, such challenges would be expected to become less pressing with advances in medical science. Philosophical value theory suggests, to the contrary, that scientific progress, through opening up an ever-wider range of choices, will increasingly bring the full range and diversity of human values into play not just in psychiatry but in all areas of medicine. The future, then, for medicine, is an integrated model in which VBM and EBM are equal partners in a genuinelyhuman discipline. (shrink)

Genetic testing can be used to determine if unexplained fractures in children could have resulted from a predisposition to bone fractures, e.g., osteogenesis imperfecta. However, uncertainty is introduced if a variant of unknown significance is identified. Proper interpretation of VUS in these situations is critical because of its influence on clinical care and in court rulings. This study sought to understand how VUS are interpreted and used by practitioners when there is a differential diagnosis including both osteogenesis imperfecta (...) and non-accidental injury.A 15-question survey was emailed to physicians who requested analysis of two genes, COL1A1 and COL1A2, from the University of Washington from 2005-2013 for patient cases involving suspicion of child abuse.Among the 89 participants, responses differed about when genetic testing should be ordered for osteogenesis imperfecta, who should be consulted about utilization of VUS test results, follow-up procedures, and who should receive the VUS results.There are no clear guidelines for how to interpret and follow up on VUS. In the legal setting, misinterpreted VUS could lead to unintended consequences and deleterious ramifications for family members. The need for better practice guidelines to help promote more equitable handling of these sensitive legal cases is clear. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reifying Relevance in Mild Cognitive Impairment:An Appeal for Care and CautionJanice E. Graham (bio) and Karen Ritchie (bio)KeywordsAlzheimer’s disease, construction, dementia, market forces, mild cognitive impairmentWe thank the reviewers for their thoughtful comments that probe shadowy areas in our argument, and we welcome this opportunity to elucidate our position. First, we are not repudiating the natural and social facts of pathologic brain degeneration and the physical and cognitive impairments (...) that manifest in people affected by dementia disorders. We are, however, questioning the epistemology, politics, and persistence by some to harden the construct of mild cognitive impairment (MCI) prematurely as a "natural" precursor to dementia. We suggested insufficiencies in viewing MCI as prodromal to Alzheimer's disease (AD; Graham and Ritchie 2006, 36), and pointed to evidence for the prognostic irrelevance of some MCI subcategories (35). The commentators have read our manuscript as suggesting that AD and MCI are different kinds, and that a diagnosis of AD is more "real" than that of MCI. But AD is also fraught with classification issues, as we describe in the section of our paper that deals with consensus committees, published practice guidelines, and the determination of treatment efficacy. Like MCI, AD is a heterogeneous condition, but unlike MCI, AD is a constructed practical kind that does some "work" beyond essentialist (neural degeneration, brain atrophy) claims. Its criteria identify people with well-defined dementia symptoms and multiple cognitive and functional impairments who are in need of, and benefit from, support. Even with these criteria, however, there have been great attempts to achieve definitional accuracy in dementia diagnoses. Practical refinements to the differential diagnosis of dementia based on solid research evidence have made way for more specific recognitions of vascular dementias, dementia of the Lewy body type, and other subtypes beyond AD. So AD too has been subject to more careful, more cautious operationalization in recent years, with research supporting multiple factors and the comorbidity of several types (kinds) of dementia in any one individual.Our paper takes up concerns that are not resolved for dementia and suggests that the nascent category of MCI is still so insufficiently defined as to be ambiguous, and as such, is in danger of identifying individuals with what will be, and has [End Page 57] already been, linked to a debilitating and deeply stigmatizing and fatal disorder (AD). We are not contesting the reality that some people begin to display early signs of cognitive loss, nor are we suggesting that symptoms be ignored; as researchers, we stand behind the careful tracking of symptoms and signs in patients and research participants as an essential clinical and research practice. In a era where the public has been made wary of the potentially fatal effects of new treatments whose more careful scrutiny in specific populations would have saved lives (e.g., Fontanarosa, Rennie, and DeAngelis 2004; Psaty and Furberg 2005), and made all the more popular by what Kramer coined "diagnostic bracket creep" (1993, 15), we are questioning the drivers and value of a premature diagnostic classification whose definitional accuracy is neither sufficient nor effective for specific identification of individuals.That matters of fact are constructed does not take away from their natural fact. Some people have subjective reports or show objective evidence of cognitive decline while having preserved activities of daily living—the construction of this evidence indicates they are not normal and they are not demented. Based on such evidence, where then does the balance of probability for MCI lie? A multidisciplinary international group of experts gathered in Stockholm in 2003 to discuss MCI concepts (Winblad et al. 2004). They acknowledged that the heterogeneous etiology of MCI contributes to "some confusion concerning the specific boundaries of the condition", stating that this "not normal, not demented" condition is nonetheless "useful both clinically and as a research entity" (p. 241). Importantly, they concluded that MCI needs "better definition" (p. 246). It was at this stage that we first wrote our manuscript, and in the subsequent two years we have eagerly awaited new studies, and the recognition of flexible, practical subtypes to evolve.We state "that MCI cannot be considered to be a separate clinical entity" (Graham and... (shrink)

Dr. Hauptman provides us with a wonderful clinical vignette, the richness of which is measured in the range of responses it can evoke. My response will be that of a career-long psychiatric educator who has served as a clinical supervisor to many residents over the years. In this role, residents like Dr. Hauptman present their clinical work and their questions. I, in turn, try to help them to learn from their patients, improve their clinical skills, and seek answers to their (...) questions. My task at the outset is to help the resident develop a differential diagnosis, a biopsychosocial formulation of the patient’s difficulty, and a treatment plan. In other words, I work with the resident to understand who... (shrink)

ICD-10 and DSM-5 do not provide clear diagnosing guidelines for DID, making it difficult to distinguish ‘genuine’ DID from imitated or false-positive cases. This study explores meaning which patients with false-positive or imitated DID attributed to their diagnosis. 85 people who reported elevated levels of dissociative symptoms in SDQ-20 participated in clinical assessment using the Trauma and Dissociation Symptoms Interview, followed by a psychiatric interview. The recordings of six women, whose earlier DID diagnosis was disconfirmed, were transcribed and (...) subjected to interpretative phenomenological analysis. Five main themes were identified: endorsement and identification with the diagnosis. The notion of dissociative parts justifies identity confusion and conflicting ego-states. Gaining knowledge about DID affects the clinical presentation. Fragmented personality becomes an important discussion topic with others. Ruling out DID leads to disappointment or anger. To avoid misdiagnoses, clinicians should receive more systematic training in the assessment of dissociative disorders, enabling them to better understand subtle differences in the quality of symptoms and how dissociative and non-dissociative patients report them. This would lead to a better understanding of how patients with and without a dissociative disorder report core dissociative symptoms. Some guidelines for a differential diagnosis are provided. (shrink)

In taking up Deleuze's differential diagnosis by observing Masoch's literary practice and extracting his libidinal principles of imperatives, contracts, fetishism and rituals, I demonstrate Deleuzian libidinal symptomatology as a specific semiotics in the service of schizoanalysis. I shall argue that in Masoch the schizoanalytic curettage of the unconscious is executed as schizoid waiting where the fleeting outer symptoms of pain–pleasure reveal the masochist's desired inner splitting of the senses.Several critical-clinical inroads to the schizoanalytic project can be envisaged. Initially, (...) Masoch's visionary concept of sexualised world history is supported by his strategic move to the law of the oral mother, yet then extended by Deleuze's concept of (inter)maternal symbolic which speculates on the fantasised rebirth of a sexless or hermaphroditic man. Finally, the parodic enactment of eros and thanatos functions as technique of dialectical disguise within the masochist's scheme of practising libidinal liberation.Masochism considered as a state of bodily experimentation which turns the oedipal law upside down, emerges as a distinct literary genre in Deleuzian aesthetics. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:The Clinic as Testing Ground for Moral Theory: A European ViewHans-Martin Sass (bio)A Philosopher’s View of Theory in the Clinical SettingThe clinic is a testing ground for theories. I am not clinician; I am a philosopher who has been in the clinic only as a patient or as an ethicist who never has had the final word nor was ever intended to have the final word. I have learned (...) that in the clinical setting general norms and conceptualizations in the Kantian sense must be tailored to real-life situations. From the philosophical schools of analytical reasoning, I learned the skills needed to analyze words and meanings and to dissect problems and so-called “solutions.” But even more impressive are the methodological skills of differential diagnosis, looking at medical problems from different angles and using different methods and instruments. The detail- and patient-oriented work of the clinician provides an excellent model of methodological clarity and professional devotion for a philosopher who assists those working for the “good of the patient.” That model has led to the development of what I call a theory and methodology of differential ethics. [End Page 351]Differential ethics is normative ethics, as it does not give up norms in favor of situational utility. Differential ethics does not venture out empty-handed in order to explore and find principles pre-existing in a given situation; rather it brings basic values and principles along with it and tries to discover the shape they must take and the priority they must be given in the situation at hand. Differential ethics differentiates between general norms and mid-level principles, virtues, and visions that must be introduced and protected effectively and specifically according to different scenarios (Sass 1993). From this European point of view, I shall briefly explain my position and comment on (1) the controversy between principlism and virtue theory, (2) differentiating and balancing, and (3) the importance of trust, both as a principle and as a virtue in the clinical setting.Principlism Versus Virtue Theory: A Mistaken ControversyFrom a European perspective, I find that the debate between the schools of virtue-theory and principlism in the United States is a mistaken controversy. The real conflict between the schools of thought is not methodology, but content. Tom Beauchamp (1995) gives examples of how one language or method can be translated into the other, and Edmund Pellegrino and David Thomasma (1988, p. 206) have formulated a rule for the virtuous physician that, in the language of principlism, reads “respect for autonomy,” but in the language of virtue theory reads “To assist my patients to make choices that coincide with their own values or beliefs, without coercion, deception, or duplicity.”In different situations, however, some systems of reference are more authoritative and effective than others. Appealing to professional virtues would be the most efficacious way to address an audience coherent in attitudes and concerned about personal character. Reaffirmation of personal and professional obligations in secular fraternities or religious communities works best when it includes an appeal to virtues in the language of the humanist tradition, moral theology, or professional ethics.But there are other situations in which authoritative attitudes and expectations are absent and society in general is searching for common, often dormant, principles that will hold it together whatever specific disagreements arise. Such a situation was present in 1978 when the Belmont Report (National Commission 1978) presented principles—respect for autonomy, nonmaleficence, beneficence, justice—and not virtues to guide moral and political reflections on and reactions to the ethical, legal, and social implications of modern biomedicine in a multi-faceted and multi-cultural society.The formal difference between the systems of principlism, virtue theory, and value theory becomes even less important when clinical-ethical questionnaires are used to understand specific scenarios or cases and to assess different options for proceeding. Thus, my first thesis is: Case discussion, scenario assessment, [End Page 352] and open questionnaires, rather than definite guidelines, bridge the difference between virtue theory and principlism, since such processes can employ any one language or a combination of all three.Differentiating and BalancingMy second thesis is: Whatever system of reference is used... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Incorporating Religion into Psychiatry:Evidenced–Based Practice, Not a Bioethical DilemmaMary D. MollerFor over sixteen years I was the owner and clinical director of an advanced practice nurse–managed outpatient rural psychiatric clinic staffed by APNs, a social worker, a licensed counselor and several graduate students. Many of our patients were victims of severe and often brutal trauma and abuse suffered at the hands of family, friends, and various professionals including spiritual (...) leaders. We also uncovered sources of abuse suffered from those involved in occult practices ranging from seemingly innocent white witchcraft (Wicca, Paganism, New Age) that includes such activities as astral projection and remote viewing to the darkest possible black witchcraft (perpetrating evil, incanting evil spirits, casting spells and hexes, creating dissociative identities) such as occurs in ritual abuse and satanic rites. Both types of witchcraft also typically involved family, friends, various professionals, and spiritual leaders. Recognizing the controversy surrounding the reality of witchcraft I am sharing a story that I hope will help break down the barriers that prevent many patients from receiving the treatment that would provide the most benefit to recovery.Seeking services for these patients led me on an intense personal and professional journey that included a profound Christian born–again experience at almost 50 years of age. My professional career grew in nearly indescribable terms as a result of the incorporation of prayer and deliverance ministry as part of the services we selectively provided. Today I always include assessment of spiritual experiences a patient has as well as spiritual supports that are available with every new patient intake. For patients who indicate that prayer is one of their supports, I ask if they would like prayer at the conclusion of the session. The gratitude that is expressed by individuals who appreciate being able to pray with a psychiatric provider is often profound.In the field of psychiatry there has been a long–standing and distinct taboo regarding incorporating religious and spiritual aspects of life experience into treatment unless it is to frame most of these discussions within the context of psychosis. This stems from the advent of psychoanalysis in which religion was deemed a neurosis and atheism became the goal. Some still hold to that belief and there certainly remains controversy regarding the incorporation of prayer into routine outpatient or inpatient care. The essential starting point is the determination of accurate differential diagnosis, which can often be a lengthy process. The clinician must be careful about distinguishing between religious experiences and religious delusions, and often this takes time to sort out. The determination of the etiology of hearing the voice of God or the devil or demons must be carefully parsed and framed within the context of the situation and culture the patient describes. If the clinician denies the existence of God or the devil or demons or the practice of witchcraft, the patient’s descriptions of such experiences will be quickly [End Page 206] labeled psychotic. The patient may then experience a lengthy hospitalization and treatment with psychotropic medications that can have an extremely negative effect on the possibility of recovery. Once I witnessed the level of healing that occurs with carefully administered spiritual interventions that are related to specific spiritual experiences that are based on the patient’s belief system, there was no going back to using only allopathic medication and non–spiritual psychosocial interventions, even in spite of the criticisms from others. The key is to understand and respect the patient’s belief system, if this is not congruent with the practitioner’s belief system, then practitioner must refer out.In the United States, an increasing persecution of Christianity and a devaluing of the Judeo–Christian heritage of our Constitution are creating a climate of intolerance to the expression of religious values resulting in an expectation that Christians should compromise their beliefs for the sake of political correctness. As a doctorally prepared psychiatric–mental health advanced practice nurse I experienced a profound born–again Christian experience that ultimately led to study of the Hebrew roots of Christianity and I now worship in a Messianic Jewish synagogue. It is impossible for me to not include the concept of spirituality into... (shrink)

Problems concerning the concept of biocoenosis in ecology (the antecedent of the pathocoenosis concept) are discussed first of all. Six main problems are identified: the problem of emergent properties of ecological communities; the problem of ambiguity; the problem of heterogeneity; the boundary problem; the problem of retrospective differential diagnosis; and the problem of explaining change over time. The rest of the paper gives illustrations of these problems in relation to human pathogens drawn mainly from the interactions of malaria (...) with other diseases, particularly but not exclusively in the Mediterranean world, from antiquity through to modern times. (shrink)

Feigning symptoms distorts diagnostic evaluations. Therefore, dedicated tools known as symptom validity tests have been developed to help clinicians differentiate feigned from genuine symptom presentations. While a deviant SVT score is an indicator of a feigned symptom presentation, a non-deviant score provides support for the hypothesis that the symptom presentation is valid. Ideally, non-deviant SVT scores should temper suspicion of feigning even in cases where the patient fits the DSM’s stereotypical yet faulty profile of the “antisocial” feigner. Across three studies, (...) we tested whether non-deviant SVT scores, indeed, have this corrective effect. We gave psychology students and clinical experts a case alluding to the DSM profile of feigning. In successive steps, they received information about the case, among which non-deviant SVT outcomes. After each step, participants rated how strongly they suspected feigning and how confident they were about their judgment. Both students and experts showed suspicion rates around the midpoint of the scale and did not respond to non-deviant SVT outcomes with lowered suspicion rates. In Study 4, we educated participants about the shortcomings of the DSM’s antisocial typology of feigning and the importance of the negative predictive power of SVTs, after which they processed the case information. Judgments remained roughly similar to those in Studies 1–3. Taken together, our findings suggest that students and experts alike have difficulties understanding that non-deviant scores on SVTs reduce the probability of feigning as a correct differential diagnosis. (shrink)

When the Global Financial Crisis hit, major political economists were able to boast that they had long warned that "crazy times" were coming. By contrast, leading sociologists seem to have been wrong footed. Totalizing narratives of a new "risk society", "second modernity" and the like appeared to have sacrificed the grounds for weighing up the costs and damages of contemporary capitalism. Made famous by Karl Polanyi, the concept of the embedded market suggests a differentiated diagnosis of our times that (...) should allow sociology to re-enter the discussion as a critic of an ideological attempt to block public discussions about losses and dam ages of contemporary capitalism. The following paper will explore several readings of this concept and will evaluate their capacity to revive sociology's critical powers. (shrink)

Graphical AbstractTesting for respiratory viruses and SARS-CoV-2 in clinical and epidemiological settings has contrasting purposes and utility. Symptomatic patients are best tested with respiratory virus panels to establish the pathogen and guide personalized treatment. Asymptomatic patients are tested for a single infectious pathogen to establish carrier status and guide containment.

In this paper, we use a phenomenological approach to compare the unusual ways in which language can be experienced by individuals with schizophrenia or severe mood disorders, specifically mania and melancholia. Our discussion follows a tripartite/dialectical format: first we describe traditionally observed distinctions ; then we consider some apparent similarities in the experience of language in these conditions. Finally, we explore more subtle, qualitative differences. These involve: 1, interpersonal orientation, 2, forms of attention and context-relevance, 3, underlying mutations of experience, (...) and 4, meta-attitudes toward language. Such distinctions appear to reflect significant differences in underlying forms of subjectivity; they are broadly consistent with work in phenomenological psychopathology on other aspects of experience, including body, self, and social world. An understanding of such distinctions may assist with difficult cases of differential diagnosis, while also contributing to a better understanding of suffering persons and of psychological factors underlying their disorders. (shrink)

The transformational pace of modern education, healthcare, business management systems, etc., requires new approaches for prompt and reliable personality assessment. Phenotypology is one of such theories and it claims of the discovered interconnections of a person’s psychological and psychophysical characteristics on the basis of individual features of his/her phenotype. The article aim is to present some validation results for the Phenotypology hypotheses as a possible tool for personality assessment. In order to verify connections between phenotypic treats and individual behavior, we (...) conducted the study when respondents were differentiated according to some anthropometric (facial) peculiarities and characterological features. The results were quantified and analyzed using the mathematical-statistical linear regression. The research output contains the rationale for the conclusion that there are no statistically significant correlations between some phenotypic body features and such individual psychological characteristics as aggressiveness, impetuosity, pedantry, passivity, etc. In particular, the validity of using of appropriate phenotypologic representations to predict the examined character traits was studied. The obtained results disproved the possibility to use directly the phenotypic approach for reliable characterological profiling. Though, the study outcome is tentative due to some limitations on generality. It is necessary to continue verification of the Phenotypology hypotheses with a broader experimental sample with the inclusion of various ethnic and racial groups’ representatives. However, until then, based on actual findings, the practical application of the Phenotypology statements is doubtful, at least for the purposes of character diagnosis and personality assessment. (shrink)

When confronting the issues related to developments in modern medicine and biotechnology, we must repeatedly ask ourselves anew what can and cannot be justified in an ethical sense. For radically new ethical questions seem to arise through innovative techniques such as stem cell research or preimplantation diagnosis — and with them new areas of conflicting interests. If one scrutinizes the previous positions related to this subject, it becomes conspicuous that a multitude of questions has quickly piled up — however, (...) (as in the case of Germany) comprehensive and differentiated views have mostly been lacking. (shrink)

Professor Jennett first defines the term `brain death' and the problems arising from a diagnosis of death, some the result of recent technological advances. The diagnosis is not necessarily connected with donor transplants, although in the popular mind this is still so. The criteria for establishing brain death and the sources of potential error in this diagnosis are outlined. The diagnosis of brain death can be made confidently, as is already common practice, and this should become (...) standard good medical practice. (shrink)

The article offers a critical assessment of an article on “Corporate Legitimacy as Deliberation” by Guido Palazzo and Andreas Scherer in this journal. We share the concern about the precarious legitimacy of globally active corporations, infringing on the legitimacy of democracy at large. There is no quarrel with Palazzo/Scherer’s diagnosis, which focuses on the consequences of globalization and ensuing challenges for corporate social responsibilities. However, we disagree with the “solutions” offered by them. In a first step we refute the (...) idea of a legitimacy of morals, maintaining that morality is a premodern mode of creating legitimacy. Even worse, moral is becoming a dangerous commodity under conditions of fundamental global disagreements and antagonisms. We secondly refute the concept of the “politicized corporation”, maintaining that Palazzo/Scherer disregard the consequences of functional differentiation of modern societies and, in particular, disregard the wisdom of political restraint and constitutional guarantees for the autonomy of different spheres of society. Finally, we refute a seemingly romantic notion of deliberation, maintaining that deliberation and deliberative democracy is a worthy idea, which, however, has no place in the real world of globalized contexts. On the other hand, we also find enough common ground and common concern with Palazzo/Scherer to validate a fruitful discourse. (shrink)

The ability to differentiate between what is just and what is unjust may be considered as the precondition to demand one's own rights. Starting from this point, this research was carried out to describe the level of awareness of patients concerning their rights. The main hypothesis was: the higher the socioeconomic and cultural level of patients, the higher is their awareness of their rights. This research was conducted in one of the state hospitals in Turkey in 1998. It is a (...) descriptive study carried out on 128 inpatients in medical and surgical wards. The data were collected by a questionnaire, which included questions on the rights of patients and gave sample cases. The sample cases were designed by referring to the World Health Organization Declaration on the Promotion of Patients' Rights in Europe. Only 23% of the participants were able to recognize patient rights, while 32% could not; the majority (45%) were undecided in recognizing patient rights. The awareness scores were statistically significantly different for educational level categories (F = 5.84; p<0.001). A continuously declining trend was observed for patient rights awareness scores from the highest educational level to the lowest. This partly proves the hypothesis of the research. However, the awareness scores were not significantly different for the other background variables (p>0.05). Most strikingly, 38% of the patients had no idea about their diagnosis and 63% of those who had undergone surgery did not know why they had had the operation. (shrink)

Richard Koch first made his appearance in the 1920s with works published on the foundations of medicine. These publications describe the character of medicine as an action and the status of medicine within the theory of science. One of his conclusions is that medicine is not a science in the original sense of the word, but a practical discipline. It serves a practical purpose: to heal the sick. All medical knowledge is oriented towards this purpose, which also defines the physician’s (...) role. One kind of knowledge is diagnosis, which is strictly understood in relation to therapy, and is at the core of medical thinking. Diagnosis is not the assignment of a term of a species to a patient’s disease: this would not do justice to the individuality of a clinical manifestation and would fail to provide a reason for individual therapy. Nevertheless, the terms assigned to diseases, although fictitious, are not useless, but assist in differentiating various phenomena. These conclusions carry ethical consequences. Because the task of helping the sick constitutes medicine, morals not only set ethical limits: medicine originates in a moral decision. If there are no diseases but only individual sick people, disease can not be defined as an abnormality. The individual benefit to the patient must not necessarily be the complete restoration of health. With its object being incalculable, medicine cannot guarantee its own success. Here the physician has to develop principles that allow for the best possible response to the challenges faced in varying situations of conduct. (shrink)

Precise and timely diagnosis of Parkinson’s disease is important to control its progression among subjects. Currently, a neuroimaging technique called dopaminergic imaging that uses single photon emission computed tomography (SPECT) with 123I-Ioflupane is popular among clinicians for detecting Parkinson’s disease in early stages. Unlike other studies, which consider only low-level features like gray matter, white matter, or cerebrospinal fluid, this study explores the non-linear relation between different biomarkers (SPECT + biological) using deep learning and multivariate logistic regression. Striatal binding (...) ratios are obtained using 123I-Ioflupane SPECT scans from four brain regions which are further integrated with five biological biomarkers to increase the diagnostic accuracy. Experimental results indicate that this investigated approach can differentiate subjects with 100% accuracy. The obtained results outperform the ones reported in the literature. Furthermore, logistic regression model has been developed for estimating the Parkinson’s disease onset probability. Such models may aid clinicians in diagnosing this disease. (shrink)