I know someone ( 16 years old )who started having blister like bumps on face - cheeks, chin and forehead on the 11th of August- They have broken and scabbed - still very present. She has developed them also on legs and they are breaking and scabbing. It is September 7th and 4 more showed today on her legs. She saw a dermatologist on September 3rd. He gave her a steroid cream for her face (lighter one) and legs (stronger one). I am not sure it helped. Any input? Should she see a pediatrician?
Hi... By what you quote I feel that it is acne vulgarism, and it is in sever form. But, skin conditions are best diagnosed only after seeing directly. I suggest you to upload photographs of the same on this website, so that I can guide you scientifically. Hope my answer was helpful for you.  I am happy to help any time. Further clarifications and consultations on Chat Doctor are welcome. If you do not have any clarifications, you can close the discussion and rate the answer. Wish your kid good health.