Hi Dear, Welcome to HCM. Understanding your concern. As per your query you have symptoms of itchy body which occur when body give response to some external stimuli or some kind of allergen. Need not to worry. They are usually harmless until they cause problem like breathing problems, swallowing problems. Introduction of allergen to skin cause release of some chemical which make the skin to swell and it could be due to systemic conditions such as contact dermatitis. I would suggest you to give cold compresses to reduce itchiness. You should give cold compresses several times a day. You should avoid touching or pricking it with any sharp object as it will exaggerate your symptoms. Consult dermatologist for proper diagnosis. Doctor may prescribe steroid therapy. Until then start taking antihistamine drug benadryl Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari