Suggest Remedy For Itchy Skin Allergy

Hello sir I have been suffering from a type of skin allergy. itching problem in all Over body. i use to spto is use some allergy stop medicine " Zyncet, Citrazine, Cz3, Avil, Deksona". but i fell these medicine are Crate other infactions in my body. in summer my upper lip always black & dry. pls solve my problem.
Nidhi