Atsushi Shima, Satoshi Yoshikawa, Takeshi Ueda
An 80-year-old woman with a history of vascular parkinsonism, dementia, and orofacial dyskinesia presented to the general medicine clinic with a 2-week history of decreased appetite. The patient had been taking amantadine (100 mg daily) for 6 years. Vital signs were blood pressure 128/81 mm Hg,