My 8-year old has been breaking out for almost a year, now. Blackheads and whiteheads across her forehead, down her nose and on her chin. We have tried all the conventional teen cleansers and ointments - no help. She eats healthy food, is thin (no signs of puberty at all!!), and has good hygiene. What's up? Does this merit a doctor's visit or is she just very unlucky?