title: Bilateral muscular tinnitus due to myoclonus of extrinsic auricular muscles.
abstract: The muscular tinnitus due to an extrinsic auricular myoclonus is an extremely rare disorder which demonstrates a semirhythmic involuntary movement of the ear. We report a 33-year-old man with clicking tinnitus caused by focal myoclonic jerks of bilateral posterior auricularis muscle and bilateral temporalis muscle. This muscular tinnitus persisted except for when he was sleeping or breath holding. His symptom responded poorly to medical therapy but was controlled by botulinum toxin type A injection under electromyography monitoring with favorable outcome. Previous reports of this condition and possible therapeutic approaches are discussed.
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Korea University College of Medicine, South Korea.
authors.forename: Kijeong
authors.initials: K
authors.lastname: Lee
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Hallym University College of Medicine, South Korea. Electronic address: brune7708@gmail.com.
authors.forename: Jiwon
authors.initials: J
authors.lastname: Chang
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Korea University College of Medicine, South Korea.
authors.forename: Sangheon
authors.initials: S
authors.lastname: Park
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Korea University College of Medicine, South Korea.
authors.forename: Gi Jung
authors.initials: GJ
authors.lastname: Im
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Hallym University College of Medicine, South Korea.
authors.forename: Hyung Joon
authors.initials: HJ
authors.lastname: Choi
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Hallym University College of Medicine, South Korea.
authors.forename: Jin Hwan
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Hallym University College of Medicine, South Korea.
authors.forename: Hyung-Jong
authors.initials: HJ
authors.lastname: Kim
mesh_terms: D000328:Adult; D019274:Botulinum Toxins, Type A / Q000627:therapeutic use; D004431:Ear, External; D004576:Electromyography; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal; D009207:Myoclonus / Q000150:complications* / Q000175:diagnosis / Q000188:drug therapy; D009465:Neuromuscular Agents / Q000627:therapeutic use; D014012:Tinnitus / Q000188:drug therapy / Q000209:etiology*
chemical_list: D009465:Neuromuscular Agents; D019274:Botulinum Toxins, Type A
keywords: Auricular muscle; Botulinum toxin; Myoclonus; Tinnitus