To compare the clinical characteristics of brief reactive psychosis with those of schizophrenia, the authors selected 50 patients of brief reactive psychosis meeting with DSM-III criteria and 50 patients of schizophrenia meeting with both DSM-III and RDC criteria. All patients were admitted to the psychiatric ward of Pusan Paik Hospital from Apr. 1, 1984 to Mar. 31, 1987 The results obtained from this retrospective study were as follows • 1) Brief reactive psychosis was apparently more common in woman(74%) and usually appeared in early adulthood, but had more wider age distribution than schizophrenia. 2) Although their educational levels were lower than that of schizophrenics, the patients of brief reactive psychosis showed better marital and premorbid adjustment than the schizophrenics. 3) In brief reactive psychosis, the premorbid personality was more variable than in schizophrenics and the most vulnerable personality was hystrionic(22%) and dependent(l8%). 4) The major psychosocial factors predisposed to the development of brief reactive psychosis were marital or financial crisis(26%)，death or separation(22%), academic or occupational p ro b lem s (l6 ^ ) and health problems(l2%) in order of frequency. 5) On admission, insomnia(92%), emotional turmoil(82%) and hallucination(66%) were more frequent in the patients of brief reactive psychosis than in the patients of schizophrenia. Although the Schneider’s first rank symptoms were less frequent in the former, it was surprising that they were present in 32% of them. 6) Almost all of the patients with visual hallucination were reactive psychotic patients and 64% of the hallucinatory images of them were the deads or ghosts. 7) During the course of admission, the majority(60 % ) of the patients of brief reactive psychosis were treated with daily dosage under 200mg of chlorpromazine equivalent.
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