http://www.acne-web.org/hives-acne/

Does my baby have hives or a bad case of Baby Acne?
My 1mo old son has pimple like bumps all over his body. It started on just his face and has slowly progressed down his body. I switched from Breastmilk to Similac Advanced when he was 3wks old. At first I thought that it was just Baby Acne because it was just on his face and right on his chest, but now, its all over his body. Could this be a reaction to the formula? or to the Detergent? Or could it just be a severe case of Baby Acne? or Hives? How can I help this problem?
My poor baby had the same thing! It took us awhile to figure it out, b/c he was breastfed, but finally we figured out he was allergic to dairy! He’s now on soy fornula and his rash/bumps finally cleared up! However, if you give him anything with milk in it (even a little bit of milk in some mash potatoes, for example) he gets hives on his face and then a rash develops on his cheeks.
I mentioned his rash at his 1 month and 2 month checkups, and then even took him in to get it looked at at his 3 month checkup, and the doctor just said it was dermititis. He recommended cortizone cream. It didn’t help. Nothing did, but finally eliminating all dairy from his diet.
Natural Remedies & Cleanses : Home Remedies for Skin Hives