masticatory spasm

mas·ti·ca·to·ry spasm

involuntary convulsive muscular contraction affecting the muscles of mastication.

mas·ti·ca·to·ry spasm

(masti-kā-tōr-ē spazm)
Involuntary convulsive muscular contraction affecting muscles of mastication.
References in periodicals archive ?
Marsden, "Focal dystonia of the jaw and the differential diagnosis of unilateral jaw and masticatory spasm," Journal of Neurology, Neurosurgery and Psychiatry, vol.
Focal dystonia of the jaw and the differential diagnosis of unilateral jaw and masticatory spasm. J Neurol Neurosurg Psychiatry 1986; 49: 651-6.