Doctor said first one was probably a concussion they werent so sure about the second time. First time was when I was ducking to walk into a house and banged my head on the ceiling.Only symptom was a headache for 5 months. Second time I banged my head on a low pipe. This time it was headache and fogginess for almost a year. I probably bumped and did minor hits since then but this recent one is the only one I can remember hitting this hard.