title: [Orthostatic tremor inducing instability].
abstract: Orthostatic tremor (OT) is a neurological disease of unknown aetiology. It is defined by the presence of a 10-20 Hz tremor in the legs while standing still. Symptoms described are dizziness and instability that diminish if the patient sits down or leans on something; drinking small amounts of alcohol significantly reduces OT. Due to the dizziness and/or unsteadiness, these patients are usually referred to the neuro-otology department. We report 4 cases diagnosed with OT. The diagnosis of OT should be considered for patients with instability. The clinical history is a key factor to suspect this entity, and the diagnosis is given by the register of 10-20 Hz contractions on limb electromyography. Treatment for this disease consists of medical treatment; the first option is clonazepam.
authors.affiliation: Departamento de Otorrinolaringología, Clínica Universidad de Navarra, Pamplona, España. rmanrique@unav.es
authors.forename: Raquel
authors.initials: R
authors.lastname: Manrique-Huarte
authors.forename: Juan
authors.initials: J
authors.lastname: Arcocha
authors.forename: Nicolás
authors.initials: N
authors.lastname: Pérez-Fernández
mesh_terms: D000368:Aged; D001301:Audiometry, Pure-Tone; D002150:Caloric Tests; D002998:Clonazepam / Q000627:therapeutic use; D004244:Dizziness / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*; D004576:Electromyography; D000431:Ethanol / Q000494:pharmacology; D005260:Female; D006312:Hearing Loss, Bilateral / Q000150:complications / Q000175:diagnosis; D006319:Hearing Loss, Sensorineural / Q000150:complications / Q000175:diagnosis; D006801:Humans; D007866:Leg / Q000503:physiopathology; D008875:Middle Aged; D009325:Nausea / Q000209:etiology; D009460:Neurologic Examination; D004856:Postural Balance / Q000187:drug effects; D011187:Posture; D012665:Semicircular Canals / Q000503:physiopathology; D012678:Sensation Disorders / Q000188:drug therapy / Q000209:etiology*; D014202:Tremor / Q000150:complications* / Q000175:diagnosis / Q000188:drug therapy
chemical_list: D000431:Ethanol; D002998:Clonazepam