Name that Rash

Let's play the game "Name that Rash." Bailey has had a rash on her lower legs forever. Originally everyone said she had dry skin but in March when I looked at her legs in the sun I could see that it was a rash. Since March it has gotten so much worse. It spread to her upper legs, arms, and face. She also now has it on the back of her legs. The pediatrician, much to my dismay, does not seemed concerned. The first time I said something he said to put lotion and steroid cream on it. I went back and told him I did not put the steroid cream on it because I did not feel comfortable putting that much steroid cream on her. The steriods are absorbed through the skin. He gave me a RX and said to change her soap to dove. I did not get the RX filled because it was a tube of cream for $135. I believe we need to fix the problem and not mask it with steroid cream. All opinions are welcome. I know what I believe is the problem but would love to hear from some else. It hard to get a good picture of the rash. Click on the picture to enlarge it so you can see the rash better.