I agree with the dermatologist that the one-sided
natureNature-throid
Natures tears of the spots suggests external trauma. The fact that you can't think of any doesn't help or hurt--most of us can't recall what produced a bump or bruise.
I aslo agree with his that the only way to at least try to ascertain the exact nature of the spost (and treat them) is to perform a bippsy. If your daughter refuses, so be it--perhaps nothing useful would come from it, and if the dermatologist doesn't think it's risky to let things be, then I agree with him there too.
But beyond getting another live opinion, I'm afraid I don't have any other diagnostic or therapeutic suggestions.
Best.
Dr. Rockoff