Hi my concen is that since winter started i started itching a lot and mostly on my back and neck arms legs its every where . but if i scratch it burns and the area i scratch or bump into somthing gets red and swollen like a rash so if i bump my foot on the bottom it gets red and swollen if feel like im walking on top of a bump it really burns too i went to the doctor one time but he said it was just dry skin but i dont think i havent gone again because i dont have insurance. what can this be im worry that it can be somthing on my blood.