title: [Orthostatic tremor causing postural instability in Parkinson disease: report of one case].
abstract: Parkinson disease (PD) is a movement disorder characterized clinically by the variable combination of rigidity, bradykinesia, rest tremor and postural instability. Usually postural instability is a late-onset manifestation and is frequently associated with axial manifestations and with a poor prognosis. We report a 67-year-old female with orthostatic tremor as the etiology of her postural instability. The patient was treated with increasing doses of clonazepam, reaching 2 mg/day, and levodopa. There was an improvement of postural instability with a good response of parkinsonian symptoms.
authors.affiliation: Departamento de Neurología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Temuco, Chile.
authors.forename: Enrique
authors.initials: E
authors.lastname: Aguilar
authors.forename: Debora
authors.initials: D
authors.lastname: Pollak
authors.forename: Cecilia
authors.initials: C
authors.lastname: Necochea
authors.forename: Ricardo
authors.initials: R
authors.lastname: Fadic
authors.forename: Carlos
authors.initials: C
authors.lastname: Juri
mesh_terms: D000368:Aged; D055724:Electrophysiological Phenomena; D005260:Female; D006801:Humans; D010300:Parkinson Disease / Q000150:complications*; D004856:Postural Balance / Q000502:physiology*; D012678:Sensation Disorders / Q000175:diagnosis* / Q000209:etiology; D014202:Tremor / Q000150:complications / Q000175:diagnosis*