a1 Royal Edinburgh Hospital, Edinburgh; Douglas Inch Clinic, Glasgow
Syndromes of dyskinetic movements in subjects (N = 70) with chronic schizophrenia were investigated, using principal components analysis of AIMS ratings. Consonant with previous research, three discrete groupings were found, namely dyskinetic movements of lips-jaw-tongue, limb-truncal and facial movements. These were then related to demographic, psychological and movement disorder variables. The limb-truncal, but neither the lips-jaw-tongue nor facial movements components, were associated with negative symptoms and cognitive impairment.
c1 Address for correspondence: Dr K. W. Brown, Forth Valley Mental Illness Unit, Bellsdyke Hospital, Larbet FK5 4SF.