Abstract

Disordered arousal leads to a confusional state with an incoherent line of thought, temporal disorientation, poor recall, visual illusions, hallucinations and disordered behavior. With the exeption of dementia with Lewy bodies, which is characterized by fluctuating confusion, other disorders causing dementia persist and deteriorate over months or years, and are not characterized by fluctuations or confusional episodes, exept when other medical or environmental perturbations disrupt the arousal systems of the brain. Sometimes, their hallucinations are different, with religious tendecy, and maybe we must insist with anamnesis related to prevoius relgious beleifs, to see if is possible to correlate some damage area than cause hallucinations, are reliable with our faith.