Hi, I have been having what looks like hives appearing on my lower legs. This has been going on for about 2 yrs now. It is completely random when it happens and I have noticed that I don't get them during the summer only. When I get them, it may be 1 or more at a time and they get really itchy. The make the area swell quite a bit. ex. my one knee may be twice the size of the other one because of it. They are hot to the touch and after a while they start creating pain. Applying something cold to it only gives it a small amount of relief and adding anything warm or hot just makes them more itchy. I have already tried antihistamines like benadryl and reactine and nothing has worked. Any ideas???