I used to do this from about middle school age up through my early twenties. Sometimes I would give myself nosebleeds. I can't remember the last time I had an episode but it's been years. However, I am worried about the long-term health problems I may have from what I used to do. I already know I gave myself/worsened TMJ disorder because of it and have had a chronic neck ache since I was 23. I'm hoping that's the worst of it but I'm not so sure.

I would advice anybody who is still doing this to get some kind of help. There are other ways to deal with your anger/emotions than self-harm.