Abstract
As a rule, mental illnesses are connected with increased self-observation, a narrowing of attention to one′s own person, and with the backward turn of thinking to what has already been done or has happened. These phenomena can be summed up in the concept of hyperreflexivity. In this paper, this concept is interpreted against the background of Plessner′s distinction between the lived and the objective body as implying always already a component of self-alienation. This will be illustrated in a number of psychopathological conditions such as insomnia, obsessive-compulsive disorder, hypochondria and schizophrenia