sudden sensorineural hearing loss


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sud·den sen·sor·i·neu·ral hear·ing loss

(SSNHL) (sud'ĕn sen-sōr'rē-nū-răl hēr'ing laws)
Hearing loss that affects at least three contiguous pure tone frequencies and occurs within a time span of 72 hours. Because of its rapid onset, this type of hearing loss is frightening and may cause extreme anxiety. Causes of SSNHL include autoimmune disorders, vascular disorders, neurologic lesions, trauma, infectious diseases, and idiopathic sources.
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References in periodicals archive ?
Reversible sudden sensorineural hearing loss during chronic hepatits C treatment with pegylated interferon/ribavirin: Letter to the editor.
Comment: Idiopathic sudden sensorineural hearing loss is defined as sensorineural hearing loss of 30 dB or more in 3 contiguous frequencies over a period of 72 hours or less.
Sudden sensorineural hearing loss may be a disorder of microcirculation or an autoimmune disorder.
1,6) Bilateral sudden sensorineural hearing loss is very rare.
The purpose of the present study is to investigate the laterality of sudden sensorineural hearing loss in a population of patients.
From January 2004 to December 2009,489 patients--218 male and 271 female; age range 10 to 91 years(mean: 55 years)--were treated for sudden sensorineural hearing loss at the Department of Otorhinolaryngology of the Hospital in Radebeul, Germany.
One year later, Chandrasekhar published the results of a clinical study of 10 patients with sudden sensorineural hearing loss who were treated with intratympanic dexamethasone.
Results of the treatment of sudden sensorineural hearing loss with intratympanic glucocorticoids have been encouraging.
Thus far, studies have been done on sensorineural hearing loss secondary to Meniere's disease (in which spontaneous fluctuations in hearing are seen, making evaluation of changes in hearing extremely difficult), sudden sensorineural hearing loss, and autoimmune inner ear disease.
Corticosteroids are commonly used in the management of several inner ear disorders, including sudden sensorineural hearing loss from idiopathic, vascular, viral, or traumatic causes; Meniere's syndrome and disease; autoimmune inner ear disease; and certain vestibulopathies.
Experimentally and clinically, it is well known that ROS are primarily generated as a byproduct of oxidative phosphorylation and ischemia/reperfusion or prolonged hypoperfusion, as is seen in myocardial infarction, in cerebrovascular accidents, and possibly in sudden sensorineural hearing loss.
She reported that she had experienced a similar event approximately 20 years earlier, which resulted in a sudden sensorineural hearing loss with vertigo.

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