Suggest Remedy For Chronic Itchy Scalp

hello Doctor I m tired of seeing allergist and dermatologist with no solution to my scalp. My scalp is extremely itchy for over a year now. I have no rashes or redness. its sore and feels like stings on my scalp. Its worst when I braid my hair, sweating or under the sun. My itchy skin is nothing compared to the scalp. Please help me