I have a lot of the compulsions that have been mentioned in this thread.

Lately I have been focused on the scalp, nose (external), forehead and chin. I pick at my scalp while I'm at work and in the car going back and forth from work, looking for any irregularity on my scalp.

At night I usually spend about 15 minutes in front of the mirror examining my face for any blemishes and picking at them. The skin on my chin looks very mottled when examined close up in the mirror. If I squeeze the mottled area sharply, there is usually a little burst of puss that comes out. I can't tell you how satisfying it feels to be rid of that miniscule bit of puss. However, because the skin is broken when I do this, it leaves a blemish and a scab, which I then routinely pick off several times, thereby delaying the healing process.

I also bite my cuticles and keep my nails trimmed extremely short because I don't like getting dirt or anything underneath them.

Like other people on this thread, I also dig at ingrown hairs. In my case, they are always under my arms and there is nothing more satisfying to me than to dig one out then shave it off.

I never thought any of this was much of a problem except for the fact that, at 46, I look like I still have acne, my scalp hurts and my cuticles are a mess. I guess it's more of a problem than I thought.