Why do I pull out my pubic hair?

[Parrot]

I sit at my house and will literally pull chunks of pubic hair out of myself, I know it's disgusting and all. At first I'd pick at my face, then I switched that habit to pulling about hair on my head, then pulling out hair on my legs, and now my pubic hair. It hurts, but it's really addicting and sometime I don't even know I'm doing it. I even bleed doing it once. I'll pull out 5-7 hairs from the root at a time. Is this normal at all? Do other people do it? or is this a horrible habit of mine? Thank you