[Symptoms of dementia misdiagnosed as psychosocial development disorder in congenital aqueduct stenosis].

The paper describes a case in which symptoms of dementia basing on a chronic psycho-organic syndrome together with congenital aqueduct stenosis were for years erroneously regarded as indicating psychosocial maldevelopment. Emphasis is laid on the need to consider the possibility of a process of dementia, even if maldevelopment of the personality only displays mild neurological symptoms.