[Role of endogenous and organic factors in the origin of endoform psychoses in the presence of senile-atrophic processes in the brain].

A clinical study of 50 patients with late schizophrenia and 150 with senile dementia demonstrated an involvement of the endogenous predisposition in the origin of schizoform psychoses in senile dementia, as well as close relation of these psychoses with atrophic processes. The author suggests that a slowly developing atrophic process creates specific, especially favourable conditions for the accomplishment of the endogenous predisposition in some cases and for the exacerbation and depending on the already existing endogenous disturbances in other cases.