Well, odd that this came up at this time, but earlier this week at work, I had a bad incident where wearing headphones was mandatory for long periods of time, I had to go through a call where the volumes were very loud. After the call, I had to rip the headphones off as the pain in my head was like someone slowly shoving a knife in it, and from that point, I heard a clear strong high pitched tone constant and never ending.
I went to my doctor who sent me to a ear specialist who sent me for a hearing test. Luckily I have hearing that is a bit above normal for a 20 year old but the new stronger tinnitus will likely be there for the rest of my life. The pain in my ear is ever so slowly subsiding, and that is what I am most concerned about.
One week of forced vacation on me and I am to not wear headphones and not listen to anything above normal conversation of volume.(TV, radio, etc...). The TV and radio cause me pain in the right ear, but strangely enough, normal conversation and the accordion amazingly do not cause any discomfort!
Guess that means no TV and more accordion... lol
Kidding aside, it is very painful, and I find it difficult to sleep at night with this single very high pitched tone. I think the doc measured it at approximately 15,000Hz (by sending measured tones out and asking me if it was higher or lower), and that this was unusually higher in pitch than what others measured. He had a chuckle that I told him not only was it very high, but that it was an unwatering consistent note of A or La!