title: Hereditary chin tremor in Parkinson's disease.
abstract: Hereditary chin tremor (HCT) is characterized by rhythmical, involuntary movements of the chin muscles usually inherited in an autosomal dominant pattern. We describe a 74-year old man with familial, childhood-onset chin tremor, and a 3-year history of progressive hand tremor, gait difficulty, and other parkinsonian features. Since chin tremor often occurs in Parkinson's disease (PD), a coexistent HCT may not be recognized unless past and family history of tremor is carefully explored.
authors.affiliation: Parkinson's Disease Center and Movement Disorders Clinic, Department of Neurology, Baylor College of Medicine, Houston, Texas, USA.
authors.forename: Sevda
authors.initials: S
authors.lastname: Erer
authors.forename: Joseph
authors.initials: J
authors.lastname: Jankovic
mesh_terms: D000368:Aged; D000978:Antiparkinson Agents / Q000627:therapeutic use; D002680:Chin; D020329:Essential Tremor / Q000150:complications* / Q000175:diagnosis* / Q000235:genetics; D006801:Humans; D008297:Male; D010300:Parkinson Disease / Q000150:complications* / Q000175:diagnosis* / Q000188:drug therapy; D014202:Tremor / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*
chemical_list: D000978:Antiparkinson Agents