hi,i am 20 years old,i am suffering with severe itching in both my legs.no matter what i do,i end up scratching them .once i scratch them they turn into black spots n it appears somewhat like burn marks .the infected skin becomes very dry and after scratching them it burns.in the initial days there were few of them so i ignored but they are spreading over my entire legs below the knee and there is severe itching and irritation.....plzzz help!!!!