1999 Volume 1999 Issue Supplement101 Pages 157
Two cases of pharyngolaryngeal myoclonus are presented here. The first case was a 48-yearold man who complained of tremor in his throat. On inspection involuntary rhythmic movements were recognized on both sides of the soft palate and the arytenoid region. Electromyography performed on both sides of the thyroarytenoid muscles showed rhythmic (4-5 Hz) grouped discharges. The second case was a 53 year-old man who complained of a sudden onset of a voice tremor. Involuntary rhythmic movements were observed on the left side of his lower lip, tongue, soft palate and the epiglottis. Rhythmic (10-14 Hz) grouped discharges were observed in both sides of the thyroarytenoid muscles, and the left side of the soft palate by electromyographic examination. MRI failed to demonstrate any causative lesions for the myoclonus in either cases.
