Yesterday, my lower left breast and top part of my rib section were itching like crazy. I looked and found a few red spots, only one spot was raised and especially itchy, it looked like a bite of some sort. Today, the spots have spread everywhere, all over my stomach, back, legs, I think even on my ear. The red spots are still pretty much flat with the exception to a few that are raised and more itchy than the others. Also, I took an antihistamine and put some hydrocortisone on most of the areas, but my lips and tongue have started to feel mildly numb. Is this hives? I recently started taking some meds my dermatologist prescribed, but I've taken them before without problems.