Intense Itchy Skin Rash on Arms and Legs
Intense itchy skin rash on leg.
About almost four years ago I started with a skin rash on my arm. It has since been present on both of my arms, top of hands, upper neck, and currently both forearms and knees. This rash gets produces such an intense itch that I visualize scrubbing my skin with a scrub brush. The heat from the sun or just heat from the air drives it crazy. Hot water also causes the rash to be more irritating than it normally is.
I have had several biopsies done by doctors and the results usually come back favorable to a lupus condition. However it's not actual lupus as the specific fluorescent biopsies never came back positive nor did the blood work. Prednisone creams do nothing to treat the type of skin rash that I have. I have seen several dermatologists and I have even ended up at the mayo clinic, but still nothing.
I have included three pictures of my skin rash problem. Two pictures show the rash on my knee area whereas the other shows the rash on the arm. With these pictures, I hope that someone can help me diagnose my rash and eventually lead me to a successful treatment.