Is it normal to scratch fabric?
Ever since I was a boy I've been scratching fabric, usually the silk edges of blankets. But it's progressed to other suitable fabrics. It's hard to describe, but I like the feeling of pieces of skin around my nails catching on the fabric. If there are no rough edges of skin that will catch on the fabric, I actually bite into my callouses to create these skin edges.
One day I realized that I can scratch my shoelaces for the same effect. If I was in a meeting, at a movie or at work, I'd always have my legs crossed so I could scratch my shoelaces. Now I buy shoelaces and keep them in my car and by my bed so I can ALWAYS be scratching them.
I'm 32 now and I have been doing this all day, every day for as long as I can remember. Scratching relaxes and calms me, it's some kind of emotional crutch. I'm sure there's some sort of psychological element to it.
I would be shocked if anyone else did this, but I'm curious to know if I have company.