<human>: This is extremely embarrassing for me to talk about with other people so I've pretty much just kept it to myself for a year.

At the start of fall last year, I acquired a pin worm infection from school. I was my hands more than anyone I know so I'm not sure how I got this infection but somehow it happened.

I thought they would just go away so for months I just endured it. They itch and hurt so badly that you will literally rip apart your skin to get to them (and that doesn't even help).

I finally caved it and got medicine a few months ago and I'm pretty sure they're gone. I still itch every now and again but I think that is because I just need to throw out the clothes that were infected.

Since the infection went away, I got a cut or something on my behind that just wont heal. Whenever I go to the bathroom, the wound opens back up and bleeds some more. I think this is the current source of the irritation. How can I fix this? I don't want to have to go to the doctor but I think I'm running out of options.

Can you condense the text into three sentences or less?
<bot>: Have had a bloody bum for a few months and it bothers me that it keeps opening the wound. How can I fix without jeopardizing my privacy?