Hi Martin, I found this on the Internet :
"I took a fall 18 months ago and my t came on over the next couple of days and became so chronic that after 3 months I had to check into the hospital. I have done a lot of research, as I am sure most people that have t have done.
I have came across several theories of the cause.
1. That the sound 'wave' going through your head damages the cochlea 'hairs' just as sound entering through the ear.
2. A concussion to the brain which causes it.
3. Damage to the hearing 'nerve'
4. Fight or flite autonomic nervous system.
5. Stress and anxiety because of the trauma.
If you have had it for 3 months and it seems to be getting better you have a good chance of it going away. They told me that at 3 months when I went to see a neurologist and had a cat scan. He thought it would be gone in 6-12 months. Well for me he missed it. I guess I just heal slower. It does seem to be getting better though.
I have hit my head much worse than I did this last time and never came up with t. This is why I subscibe to the theory of the F or F nervous system. People can get t from stress alone and I believe that if you get a head trauma and you are already under a lot of stress this just puts your nervous system 'over-the-top'.
I suggest you see a neurologist to eliminate some of those possibilities and see a good psychiatrist that can help you with some drugs to help you cope until it goes away.
Like I said, you have a good chance of it going away but I know what a bitch it is now. I have talked with several people who have direct or indirect (i.e. husband, wife, friend, etc.) information about t going away from a head injury and it has ranged from a few months to a few years, sorry to say, but the doctors do not have a clue.
The more doctors I saw the more I knew they had not a clue as to cause or treatment.
The first doctors I saw gave me the standard 'I guess you'll just have to learn to live with it' which of course is the worst answer they could possibly give you.
I tried many different treatments and drugs until I found something that works for me. This is one thing you have to find the things that help YOU."