Women with nonorganic psychosis: psychiatric and demographic characteristics of cases with versus without postpartum psychotic episodes.

Within a sample of 88 reproducing women with nonorganic psychosis, psychiatric and demographic characteristics were compared for women having only postpartum psychotic episodes (PPPs), women never having PPPs, and women having both PPPs and other psychotic episodes. Cases with only PPPs or both PPPs/other episodes most frequently had affective disorders. Cases with no PPPs most frequently had schizophrenia. Even with diagnosis controlled, cases with only PPPs were comparatively high in social class and in age at initial illness onset and were less severely ill than others. Cases with both PPPs/other episodes had the opposite characteristics. Cases never having PPPs had an intermediary position between the other two groups. PPPs in patients having only PPPs bore a special relationship to parity, not seen in other patients. PPPs appear to be associated with two different types of clinical/demographic patterns, depending upon whether the PPPs occur in isolation or as part of another illness pattern.