title: Sudden deafness in a man with thyrotoxic hypokalemic periodic paralysis.
abstract: We treated a 32-year-old man with hearing loss in the right ear followed by severe muscle weakness of the extremities. When admitted to hospital by ambulance, the serum potassium level was 1.5 mEq/L. The muscle weakness was improved following administration of potassium chloride but the hearing impairment continued. Hearing level of the right ear was extremely impaired at the level of 60-105 dB, while hearing in the left ear was fairly normal. Spontaneous nystagmus was also present. The triiodothyronine level was 290 ng/dl, thyroxine 14.4 micrograms/dl, thyroid stimulating hormone (TSH) 0.84 microU/ml, and the anti-TSH-receptor antibody was positive. Attaining an enthyroid state, the patient was discharged on 80th hospital day with the continuous medication of Methimazole. This is a very rare case of sudden deafness complicated by hypokalemic paralytic attacks. Circulatory insufficiency and electrolytes imbalance in the right inner ear was assumed to have caused the deafness.
authors.affiliation: Department of Internal Medicine, Hamanomachi General Hospital, Fukuoka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Moriyama
authors.forename: M
authors.initials: M
authors.lastname: Nozaki
authors.forename: J
authors.initials: J
authors.lastname: Kudo
authors.forename: A
authors.initials: A
authors.lastname: Takita
authors.forename: E
authors.initials: E
authors.lastname: Tatewaki
authors.forename: K
authors.initials: K
authors.lastname: Yasuda
mesh_terms: D000328:Adult; D007839:Functional Laterality; D003639:Hearing Loss, Sudden / Q000150:complications* / Q000503:physiopathology; D006801:Humans; D007008:Hypokalemia / Q000150:complications*; D008297:Male; D009123:Muscle Hypotonia / Q000150:complications; D010245:Paralyses, Familial Periodic / Q000150:complications*; D013971:Thyrotoxicosis / Q000150:complications*