title: Drug-induced and psychogenic resting suprahyoid neck and tongue tremors.
abstract: We describe three patients who presented with 4 to 5 Hz tremors of the suprahyoid region of the neck. Two developed their tremors in association with levosulpiride treatment. When they opened their mouths, the neck tremors disappeared; no tongue tremors were observed. However, a videofluoroscopic examination showed the presence of tongue tremors at rest. The remaining patient had a psychogenic tremor.
authors.affiliation: Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea.
authors.forename: Jong Sam
authors.initials: JS
authors.lastname: Baik
authors.forename: Chul H
authors.initials: CH
authors.lastname: Lyoo
authors.forename: Jae H
authors.initials: JH
authors.lastname: Lee
authors.forename: Myung Sik
authors.initials: MS
authors.lastname: Lee
mesh_terms: D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D009334:Neck Muscles / Q000503:physiopathology*; D011602:Psychophysiologic Disorders / Q000175:diagnosis*; D013469:Sulpiride / Q000009:adverse effects / Q000031:analogs & derivatives*; D014059:Tongue / Q000503:physiopathology*; D014202:Tremor / Q000139:chemically induced / Q000175:diagnosis* / Q000503:physiopathology*
chemical_list: D013469:Sulpiride; C078143:levosulpiride