My 4 year old daughter has had a rash on her right leg for about 2 months. It wasn't irritating to her at first, but has become so in the past month or so. We have tried many things, more/less frequent baths, hydrocortisone creams, antifungal lotions, moisturizing lotions, lack of bubble bath, scent free soaps, etc. It was contained to just below the knee, but has now spread to include the whole leg. She has not had any fevers in the past 6 months, we never saw a ring like in ringworm cases, it's not excessively dry like in exczema, and it doesn't seem to have crusted over like you'd expect in a varicella case. She has not been in any surgeries, has not been on any medications, and nobody else in contact with her has had any rashes. Any ideas?