Superimposed encephalopathy in the psychotic patient.

Encephalopathy (acute organic brain syndrome) superimposed on functional psychosis may be overlooked because the physician assumes that any exacerbation is due to fluctuation in the psychosis. Correct diagnosis requires a high index of suspicion and a firm knowledge of the signs of encephalopathy. A careful diagnostic approach permits the recognition of encephalopathy and separates it from functional disorders such as schizophrenia.