Psychosis not otherwise specified - change of diagnosis at five year follow -up.

A five-year follow-up study of 38 patients with 'psychosis not otherwise specified' revealed that diagnostic change occurred in 34.2% of the patients. 15.8% of the patients developed schizophrenia and 18.4% developed affective disorders. The initial diagnosis was retained in 65.8% of the patients. The onset of the illness was acute in patients from rural background and this is statistically significant. 42% of the patients presented only catatonic signs, of which nearly 70% showed full recovery.