[A case of palato-pharyngo-laryngeal myoclonus].

A case of palato-pharyngo-laryngeal myoclonus in a 53-year-old male was presented. An otherwise healthy patient suffered from involuntary movement of the anterior part of the neck. The movement stopped only during phonation and swallowing. All examinations including MRI failed to reveal any etiology, and no treatment was really effective. It was noted, however, that an anxiety often worsened the symptom. Although the cause of this disorder is unknown, psychogenic factors appear to be related to manifestation of the symptom.