How To Treat Itchy Rashes On Leg Inspite Of Using Desitin?

I HAVE 2 PATCHES OF RASH ON MY LOWER LEG AND HAVE HAD THEM FOR OVER A MONTH. THEY ARE IMPROVING VERY SLOWLY. THEY ARE VERY ITCHY. i HAVENT SCRATCHED THEM. |i HAVE BEEN PUTTING AVEENO AS MY DOCTOR RECOMMENDED, LATELY I HAVE BEEN PUTTING DESITIN THAT CONTAINS ZINC. HELPS A LITTLE BUT STILL VERY ITCHY AND HOT TO THE TOUCH.\