We report five cases of psychosis in patients with antibody to human immunodeficiency virus. All patients was man and intravenous drug abuser. The age range was 22 from 31 years with a mean of 25 years. In all cases acute schizophrenia was the first clinical picture of the HIV. Four patients had opportunistic infections and AIDS-Dementia Complex months later. If there is a genuine biological association between HIV carriage and schizophrenia illness, then HIV infection should be considered in the differential diagnosis of such an illness.