My mother feels an ant biting sensation for a second or two. she feels as if ants are crawling beneath her skin. this happens for nearly 10 - 15 times a day. this problem is in the upper half of her body but has been spreading slowly and has been persisting for more than a month now. She has also tried medicines for allergy ( atarax and candiforce) but nothing has provided relief. she is a diabetic. i don't know which doctor's expertise should be sought for. please help!!