Can't get eczema to go away on sons legs?

My son is 1 years old and has eczema. It's mainly visible on his legs, but he has it on his arms too. I've tried the brand from wal mart that has whinnie the pooh on the front and my doctor keeps telling my to use cetaphil. Cetaphil is what I have been using, but the eczema on his leg is still there and won't go away. It's like the cream does nothing for him. I feel bad for him b/c everyone always thinks he has a rash or something. Is there anything else I can try to see if it will clear his eczema up?