sounds like a low grade skin allergy, some allergies are so mild that they dont cause the usual sniffling and sneezing that are the calling card of most allergies..change the detergent and fabric softener and dryer sheets you use on the childs clothes first, then watch and wait six weeks, if you notice a change in the childs skin temperature and headaches, then you know what the problem was..problem solved. K. h. alot of supposed kid friendly soaps, detergents etc can cause mild allergic reactions, we use arm and hammer super washing soda for our daughters laundry, no harsh detergent, no allergic reaction.