My duaghter is 6 and she started gettting a couple of spots under her armpit a few weeks ago, when I checked it last the spots had multiplied and are spreading down her body, she says they are itchy. They are reddish and puss filled but small, they are just under one arm and remind me a bit of chicken pocks which she has already had. She has no other symptoms, but the spots appear to be getting worse. any Ideas?