Ringing in the ears. I looked it up and the cause is from exposure to abnormal conditions. Mine are a list...diving, weapons, machinery, water, etc. This has been going on for about a year and another diver bud of mine is in major discomfort from it. Is there a treatment? It sucks. The sounds are high pitched and continuous. I am seeing the Doc next week and want to give him an accurate solution. Foeget the "Quit doing what your doing " deal. Although diving isn't as frequent, I am in the water 2-3 times a week dependant on the swell. Any help appreciated.