Dear, Sir/Madam, I am having a allergy. Like Itching and it turn into red. Even I take medicine it stop for 1 to 2 day then it again start itching. 1 month back it was itching on face and leg. And after itching it sweat and turn that place black. On some part of face and leg has become black colour. For itching I used clotrin cream and Okacet tablet. Even I used cream but black mark is not going and it start itching after 2 to 3 day. Is there cream and tab that will help me. Pls help me.