Cranial nerve 7 aka the facial nerve. I don't know for sure, the doc said it was probably an inflammation caused by a virus/cold I experienced previously. I was told to take ibuprofen/aspirin for 7 days for the inflammation, however symptoms didn't get any better. I took 1000mg of aspirin for 5 days, 1500mg for one day and 2000mg for one day. During and 2 days after the aspirin I had no ear problems or tinnitus, basically no side effects, let alone ototoxicity. I didn't even consume toxic doses of aspirin. Then on October 25th I received ultrasound therapy for my facial nerve, after which I started to feel distorted sounds, feeling of fullness and cold sensation. This happend 1 hour after the ultrasound. 1 day later the tinnitus started. I know that ultrasound cannot damage the ear and all my hearing tests have come back normal, except for my sound tolerance threshold, that was quite low. Maybe the ultrasound irritated the nerve? The facial and chorda tympani run straight through the middle and inner ear. I don't know whether they can cause tinnitus. Right now no meds.