I am 17 months out from a head injury and still have issues with sound. Whenever I am in a noisy situation, the next day I am a total mess. I spend most of my day in bed or on the couch. It almost feels like a hangover although no alcohol was involved. People have told me to wear ear plugs and I probably should, but never seem to think about it at the time. I am hoping that it will go away sometime in the future.