PALATAL MYOCLONUS AND PRIMARY NYSTAGMUS FOLLOWING TRAUMA

Abstract
Myoclonus palate, larynx and other musculature derived from the branchial arches is relatively uncommon. Patients with this syndrome exhibit fine, synchronous, continual rhythmic movements of the palate, the pharynx, the larynx, the orifices of the eustachian tube, the muscles of the face, the platysma muscle and the diaphragm. Nystagmus on direct forward gaze (primary nystagmus) or on lateral gaze is seen concomitantly. The rate of the movements is usually the same in all the organs involved, averaging about 120 per minute, and the amplitude of the movements is small, being occasionally so fine as to elude cursory examination. The patient is ordinarily unaware of these movements, but twitching of the mouth of the eustachian tube is often accompanied with a clicking sound, which is audible to both patient and examiner. Sleep does not affect the myoclonus nor does local anesthesia of the moving parts, but palatal myoclonus may cease during

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