I am 34 years old and have been putting up extremely itchy skin for a year and half.When I scratch I am causing little bumps on my skin to scab over and they don't seem to heal. I have this rash look all over my body. I have been going to my dermatologist consistently and have been treated for Scabies, allergies.She has given me steroid creams, antihistimine creams, atarax, allegra none of which has seemed to work.She even biopsied one of the bumps but the lab report was inconclusive because the bump was partially scratched open.I have now started getting weekly allergy shots for a number of mild allergys but i am not sure this is working either.She also thought it might be my nerves (although I don't think of myself as a nervous person)so my family physcian has prescribed 150mg of Trazadone. I have taken that for four months now with no relief. Any ideas at this point would be greatly appreciated. I am going out of my mind.