urticaria
"I suffered from hives caused by friction, sunlight, temperature change, exercise, and showering for over 10 years, getting increasingly worse as I got older. I hardly had a life -- I couldn't exercise or go outside without breaking out in painful, burning hives. Claritin, Zyrtec and Benadryl only helped a little. When I was finally prescribed Xyzal by an allergist my life was changed! As long as I take it every day, I rarely get hives. I still get some if I run or am in the sun without sunscreen, but aside from that, I'm free! I am so thankful for Xyzal, and no longer living in fear every day being ruined by hives. The first few days I was drowsy, so I take it only at night."