Buzzing in the ears after a concert and headbanging - how do I stop it? :P?

What your describing sounds like tinnitus. I have benign tinnitus and it flares up when I'm stressed or go to a gig. Usually it goes after. You may be coming down with an ear infection as tinnitus often goes hand in hand with an ear infection. As hard as it is try and ignore it..concentrate on something else. If it hasn't gone by this evening and you need to sleep my advice is to plug some headphones into a radio tuned into an in between station, perhaps MW so you can hear the whoosh, this helps block the tinnitus ringing out. There's no known cure for tinnitus.

Visit your doc asap. Don't mean to worry you but did you know that headbanging can actually cause swelling on the brain so would advise not to do this again.

it takes time to repair the wear and tear to your ears brought about by potential of status too close to to the audio gadget at a stay overall performance. you could have worn ear buds. If it would not flow away in each week i desire to recommend you flow see an ear wellbeing care professional.

Stop going to such loud concerts and stop headbanging; both will damage not only your hearing but also your brain. Stop going!!!!!!

not good. You've damaged your hearing, hopefully it will recover.

if you don't want to end up as deaf as Pete Townsend, it is time to stop doing this.