Table 1.

Inclusion criteria based on the information in case files.

History of sudden, unilateral sensorineural hearing loss of at least 30 dB in three frequencies, demonstrable on a pure-tone audiogram at the time of presentation

No history of acoustic trauma

No other neurological signs

No demonstrable cause for the hearing impairment, which rules out Meniere’s disease, autoimmune hearing loss, vestibular schwannoma, cerebello-pontine angle tumors, and other potential etiology for sensorineural hearing loss

Availability of pre-treatment audiogram and post-treatment audiograms done till 1 month

Treatment must include combination of systemic steroid and pentoxifylline