itch. rash on my buttocks, tighs, arms , chest and stomach for 14 years now...it heals and comes back agai...when i scratch it turns into some kind of soa...like peeled skin...when i scratch it releases some fluid too..it hates heat too...gradually spreading to other parts of my body with black spots under my toes...my body temperature rises plus i get headach and chocked nose when i scratch . ..what can that be?