So about 5 weeks ago I got my 4th concussion over about 10 years, but ocassionally I have ringing in my ears every now and then but not often, my wife says i seem to forgot a lot of things she tells me, and loud noises and sunlight still just kill my head. I am in the military and I was wondering if anyone here is/was mil and knows if this is a med board issue? This happened on-duty, non combat related, it was during PT.