S.B.
I dealt with this last year with my daughter, the doctor said it could be treated at dermatologist, but that doesn't guarantee that there are some that haven't appeared yet, and it is pretty painful. It was really ugly. Doctor told me to put alcohol on the sores when they get a head or open up and it dried them up real well, they also gave me a cortisone cream to put on after bath and they said it needed to be done right after she got out. She cleared up in about 8-10 months, she still starts to get some itchiness and blotches, but thats the eczema, which by the way they said can trigger the whole thing. It will end.
Good luck.