I have had an odd rash-type problem for over a week. The bumps start out looking like a bite, with red blotch around it, then after a short period of time looks like a pimple. They are all over my body, and there is no distinct pattern. They only itch for a couple days, but I get new ones throughout the day and night. I noticed my daughter now has two of the same type thing; one on her arm and one on her back. Should I be worried? Is this a virus, a bug, or other?