Ohh...I see now, I only read the initial post, my bad. So no, Ive never heard of anyone hurting their shoulder from just playing. Thats strange...

My instructor tries and corrects my technique whenever he sees me doing something incorrectly but I don't remember exactly how I was playing that day I only know I was playing fast and hard which is probably what caused the injury but I'm sure my next lesson he's going to concentrate on finding out what I've done to cause this. Especially since he doesn't even get how I hurt my shoulder where it's hurt playing the snare. To answer flamtap's question currently I cannot play; not until it feels better or I find out what I did wrong at least. I tried to practice earlier today and lasted about two minutes if that before I almost screamed from the pain. So no, currently I cannot play but I should be able to again I doubt I can never play again. I hope I can still play anyway.

Okay, I have found out what I did wrong to cause my injury. I've been playing with my arms instead of my wrists and it caused my shoulder to rub against the socket. I am now learning to play with my wrists and even though my shoulder still hurts when I play it doesn't hurt very much any other times so it's getting better. Just thought I let you all know what i did wrong.

It could also be that you're not used to holding your arm up (if it's your right arm(Traditional)) If that's the case, as you play more your deltoid will develope and not hurt so much after awhile.

That's exactly what happened to me Snare-One...It's really not a pain though, you get very tired up there very fast though.

But in response the initial post, I have that same problem right now I think. I went to a doctor and the problem lies in my rotator cuff. Some of the muscles tore and stretched out. I might also suggest that one reason your shoulder hurt so bad is because most times, it's when you sleep on it wrong. My doctor said the wrong kind of pressure on your shoulder while you are sleeping can really mess you up. He said you won't even notice it until later in the day when you start to have fatigue in your body.