[Concomitant disorders among the mentally retarded].

For a period of six years, concomitant disorders were registered at annual routine examinations of 226 residents of a central institution for mentally retarded. Only in six patients were no concomitant disorders found. 19.5% displayed concomitant disorders from one type of disease, 30.5% displayed two or more concomitant disorders from two types of disease, and as many as 47.3% displayed concomitant disorders from three or more types of disease. The residents examined showed particularly high occurrences of various deformities, mental disorders, and diseases of the nervous system, sense organs and musculo-skeletal system. The most frequent singular disorders were epilepsy, cerebral palsy and deformities of the back and foot.