Can anyone give me an idea on what this could be. It's all over kyntons legs from top to bottom. And now spreading to his arms. It makes him itch really bad... And it's rough and bumpy.. he has had it around a year now. And around this time last year he was eating more solids and drinking milk. Could it be an allergic reaction of some sort? His Dr tried telling me heat rash and all he did was look at his legs but didn't do any testing. When he was a few months old his first pediatrician thought he might have had a milk allergy but never checked him for it. I don't know what to do but it causes him a great amount of discomfort.