my son started getting unexplained itching all over his body which i had already seen a doctor about a couple of weeks ago who said he had mild eczema for which he gave me hydrocortisone cream. i took him back again yesterday and the doctor could not give me any answers so prescribed phenergan. today we've found red spots all over the upper part of his back which when we put tcp on did go down a little but they have little yellow heads on some of them. i thought chick pox started on the tummy and chest. any ideas?