[Clinical study of 30 cases of affective disorder with mental retardation].

Thirty cases of affective disorder with mental retardation (MR) were reported. The prevalence of affective disorder, clinic characteristics and cause of misdiagnosis in these patients were discussed. Authors found that the criteria of affective disorder set by Chinese Medical Association (1984) can be used in the patients with mild or moderate MR. Typical elated mood and flight of idea were rare. The major symptoms of these patients include hyperactivity or hypoactivity, hyperplasia or bradylogia, and increase or decrease of instinctive behavior. The atypical symptoms in manic-depressive psychoses are more common in these cases. In the most of these patients, the good result has been found.