I had Stage III tonsil SCC (HPV-16) with one lymph node involved. I had Cisplatin and rads; about halfway through my treatment I noticed I wasn't hearing so well.
My docs at Johns Hopkins sent me to one of their audiologists, who did a hearing test and found significant hearing loss in my left ear and slightly less in my right. Thing is, I went to one too many concerts by The Who -- "the Loudest Rock 'n' Roll Band in the World" -- back in the day. I also am a hunter and shoot a lot, and (stupidly) never wore hearing protection.
So, the audiologist was unable to say for sure what caused my hearing loss, but that it's probably a combination of all of the above. I'm told that it is irreversible, regardless of what caused it. But hey, I'm alive, right? I'll take that any old day.
--Jim in Delaware