I have a cist on my shoulder. It is about the size of a match head or bigger and is annoying. A cist is like a lump of stuff under the skin.The thing that is annoying me about it is the pain! When I'm in the shower, drops of water hurt it. If someone massages my shoulders, it hurts. If i wear my schoolbag too heavily, it fucking hurts!A girl at me school had to get one on the side of her ace removed because the doctor said in 20years time it could be the size of a golf ball. Mum said she'd take me to the doctor on the holidays. I'm scared.