Diagnóstico diferencial de psicosis de inicio a los 64 años con síntomas tipo esquizofrenia

Psychosis that starts after the age of 60 years has incited diagnostic controversies since the beginning of psychiatry. One of the major discussion subjects has been the validity of the application of the diagnosis of schizophrenia to that age range. Nowadays, there is an international consensus on the diagnosis, nomenclature and treatment of late and very-late-onset schizophrenia. The authors present the case of a woman who started to suffer delusions and hallucinations at the age of 64. After a differential diagnosis of delirium and other somatic conditions, as well as dementia, delusional and affective disorders, she was diagnosed with late-onset paranoid-type schizophrenia. The validity and the history of the concept of late-onset schizophrenia, as well as its differential diagnosis and clinical features are discussed.