I know you posted this in January, but just wanted to post that my son had this for quite a while. At first we had no idea what it was, neither did the dr's that I was seeing(couldn't get into his regular dr). Finally got into his regular dr and she confirmed what it was. It lasted about 2 to 3 months (possibly longer, can't quite remember), no medication was needed, just something to calm the itching (we used calamine lotion).

Has your dd still got the pustules?

My ds has some scaring on his legs from it, but the dr said it would go away with time.