I have had a rash, that has been on my legs for about a year now. I had just got a cat, which I know I am somewhat allergic to. I have red patches on my legs, that itch like crazy. I itch them sometimes until they bleed. I have used some over the counter stuff which suppresses it, but as soon as I stop using it, it comes back. They patches are red and unsightly, if you have any suggestions as to what it might be, please help!