I Often Find Myself Picking At My Fingernails And Toenails.

I often find myself picking at my fingernails and toenails. Sometimes I'll even rip off a perfectly okay nail. I am somewhat aware while doing this but usually while I am It feels like I'm zoning out. I have a history of mental health problems. I have been diagnosed with anorexia nervousa and OCD. I was wondering if they would be the cause of why I do this.