Reading this made mine much worse than normal. Just the thought I guess.
Mine showed up about 40 years ago when I stuck my head in an enclosed cargo box and used a sledge to loosen up a joint that was glued to the top of a Land Cruiser. The concussion was painful and a week or so later the ringing was noticed.
Like most folks it never goes away but if you are doing something and not focused on the ringing it isn't a big deal. If you lay down in a quiet room it can get very frustrating until you forget about it.
