Re: Acne on stomach???
I get them too, always ABOVE my navel, never below, just below the creases where my breasts start, and below my sternum.
I think they're ingrown hairs though, or some other kind of follicle thing because (in my case) they can have a hair in them, and the sebum is usually hard, and seed-like. And the scars take MONTHS to heal and go away there.
I think it's follicular in nature, but I also think that most of my acne anyway is follicular in nature in terms of how it erupts.