I was involved in a car accident over 20 years ago. The result was a severe concussion, among other injuries. Back then, there was not as much emphasis on long term effects of concussions so I never thought twice about it. I played football in high school, college and semi pro, and there were subsequent times after the car accident where I received some more blows to the head.

My concern is now I am experiencing hearing loss, memory loss, and relentless tinnitus. From what I have been reading it sounds like most of the people experiencing ringing in the ears experienced it fairly soon after a head injury. However, I did not start to have the effects until the last couple of years. Does anyone know if there's a latency effect of issues from brain injuries, and if so is it possible it can be 20 years later?