S.O.
ask your doctor to rule out the skin form of Celiac Disease. It's caused by a reaction to gluten manifests itself in just the way you are describing. You can do a blood test for celiac or you can do a trial of a gluten free diet to see if their skin gets better. You do not need to go through the full screening for Celiac if they have a positive response to the diet. It is a dietary change for life, but is a miracle for those who experience this. good luck.