What Type Of Skin Problem?

I have extremely itching and burning skin all over my body, it usually never stops itching. I keep myself from scratching it, but when I do the area gets really red and a million welts pop up. It itches and burns a lot more then. I cut back on anything scented. I'm eating all the same foods I usually do. I haven't been in contact with a lot of sun or poison Ivy. The itching is A LOT worse at night time. I have no rashes or dis colored skin. It looks pretty normal besides really dry. The welts range in size from huge to small, all over my body. Everywhere but my face. Their even in my scalp. My boyfriend was convinced that it's scabies. Other people said shingles since the fact I have severe chicken pox as a child. No one else in my family has anything like this. It just started about 2 weeks ago.