The psychopathology of 'late schizophrenia'.

We investigated the clinical features of schizophrenic syndromes first manifested after the age of 50. By comparison with the schizophrenic syndromes first manifested before the 50th year of life we found: late schizophrenia is characterized by rich psychotic productive syndromes (delusions and hallucinations); disturbances of thought are rare; depression, euphoria and anxiety show no difference between the two groups; females are much more represented than males; social isolation is not more common in late schizophrenia than in non-late schizophrenia.