Richard A. Rison, MD, FAANEM Said R. Beydoun, MD, FAAN, FAANEM A 39-year-old woman with nasopharyngeal carcinoma underwent partial resection along with head and neck radiation therapy. Approximately 10 months later she developed progressive difficulty swallowing and facial spasms. Neurologic examination was significant for dysarthric speech and prominent rippling and wavelike movements of the t...