I went on a trip to Washington D.C. recently and ever sinced I arrived back, I have these tiny itchy bumps on the backside of my hands, arms, and below my knee. They are itchy and very hard to see- only noticable if you look at an angle. There are lots of them, but they're so small that you can't pop them or anything. They just recently spread to below my knee caps, now. I don't know if I should go get it checked out. I am too embarrassed to ask my mom about it. Is there something wrong with me? I don't know if it's a big deal or not- perhaps just an allergic reaction? I do not know if I should be worried about this. Is there some home remedy to get rid of them? Please help me.