/soy/ - Soyjaks

Everyday when I get home from school I scratch my butthole until it bleeds. It started off with me wiping a little too hard when pooping at school, but soon I found myself unable to go to the bathroom without wiping until I bled. Now I take some old unusable pair of underwear and go to town on my poop chute, just scratching and scratching my crack until the fabric has a large brown and red race strip. This provides me waves of pleasure, but I feel disgusting afterwards though and am worried I’m going to catch some disease from having an open wound in my butt crack. I try to stop, but it’s as hard as quitting masturbation. Does anyone else have this problem? What should I do?