Trismus caused by paradoxical activity of jaw-closing muscles in brain stem tuberculoma.
An ipsilateral trismus of jaw-closing muscles during jaw opening is reported in a patient with brain stem tuberculoma. This condition is only superficially simulated by spasticity or tetanus. The decisively differentiating clinical and electromyographic features and the possible pathophysiologic mechanism underlying such trismus are discussed.
Verma
A
A
Department of Neurology, All India Institute of Medical Sciences, New Delhi.
Tandon
P N
PN
Maheshwari
M C
MC
D000328:Adult; D001927:Brain Diseases / Q000150:complications / Q000503:physiopathology; D001933:Brain Stem; D004576:Electromyography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008410:Masticatory Muscles / Q000294:innervation / Q000503:physiopathology; D009119:Muscle Contraction; D014313:Trismus / Q000209:etiology* / Q000503:physiopathology; D014375:Tuberculoma / Q000150:complications*