My daughter developed nappy rash 2 weeks ago. It's red and it looks like as if someone put hot iron down there (it's so symmetrical). I went to see GP last week and he suggested some steroid cream. I have used it for the last 7 days but rash didn't clear up at all! I have no idea what to do. Rash seems to be more red when the nappy is left on for too long. After a night sleep it seems to fade. She has never had rash like this before. No blisters at all. Just this red area starting from the front, going to the sites (folds), less on the bottom. Could this be some kind of eczema / dermatitis? What should I use???