The British Journal of Psychiatry 139: 526-528 (1981)
© 1981 The Royal College of Psychiatrists
Tardive dyskinesia and abnormal tongue movements
EH Pi and GM Simpson
Forty-two subjects, 20 with and 22 without clinically diagnosed tardive
dyskinesia (TD), were rated for TD on the scale of Simpson et al. They also
performed a tongue protrusion test and had the presence of tongue movements
within the buccal cavity observed. Fifty per cent of the severe or definite
TD subjects as classified by rating scale were unable to maintain tongue
protrusion for a minimum of 30 seconds, and 85 per cent of them had
abnormal tongue movements. In 45 per cent of the possible TDs and in 9 per
cent of the doubtful subjects, the movement test was also positive.