Some extrapyramidal motor signs in cases of undifferentiated amentia.
A group of 50 mentally handicapped patients who were without gross motor deficit and had never been on anti-psychotic drugs were examined for signs of Parkinsonism and compared with a matched control group of non-handicapped people who were also examined. There was a very significant increase in masking, positive glabella tap, absence of arm swing, rigidity and hypokinesis.
D000328:Adult; D001480:Basal Ganglia Diseases / Q000175:diagnosis*; D004314:Down Syndrome / Q000175:diagnosis; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis*; D008875:Middle Aged; D009127:Muscle Rigidity / Q000175:diagnosis; D013577:Syndrome