What is the cause of sudden hearing loss?
Q: My 17-year-old son has developed sudden hearing loss in his left ear. He already had 100% hearing loss in his right ear, diagnosed 8-10 years back. What could be the reason behind this? He did not have any viral fever or received any ototoxic drugs. What is the role of carbogen therapy? Should I go for CT + MRI to search the cause?
A:Your son may have a vestibular aqueduct syndrome or some other problem that predisposes him to develop this hearing loss. Carbogen therapy may be of benefit but studies have not shown a conclusive benefit. If the hearing loss is in the moderate/severe/profound category, then he should also be fitted with hearing aids and considered for cochlear implant.