Suggest Permanent Cure For Extreme Itching In Body

Hello Dr. Prasad. Thank you for your time. I've suffered with itchy skin that started about a year ago. It was at first just my chest and neck but over the years it's all over my body and unbearable. When I saw my doctor from the very onset he said it was pityriasis rosea and prescribed anti depression pills and cream that worked very well. However it has been coming and going for over a year and seems to be getting worse every time I have an episode. I am waiting to get an allergy test done but in the mean time I have terrible itching that antihistamines do not help. I am also trying a gluten free diet. I am 41 years old.
Thank you. I appreciate your feed back.
Karen