Acute psychotic reactions in Caribbean-born patients.

A prospective study of patients with religious delusions identified 24 West Indian and West African patients. Those who had none of Schneider's first-rank symptoms of schizophrenia (principally West Indians) differed from those who did by virtue of early religious commitment, life-long religious experiences, an acute admission precipitated by social events, a greater chance of having their diagnosis changed, less than 10 different PSE syndromes, the absence of 'twentieth-century' delusions, and the presentation of malevolent witchcraft as the sole explanation of the episode. It is suggested that this group can usefully be considered as demonstrating an acute psychotic reaction of the type previously described in Africa and the Caribbean.