urticaria
"I developed Solar Urticaria a few years back, (allergies to the sun) and I've tried everything from Benadryl, Claritin, Zyrtec, Allegra and cortisone cremes and none of them have worked. The doctor finally gave me some samples of Xyzal and I noticed 98% change. I don't take them everyday but if I know I will be out in the sun for an extended amount of time, I will take one before leaving home and it last for 24 hrs. If I am in direct sunlight on a really hot day for extended hours I will still break out in hives but not as bad as I would if I didn't take anything. It doesn't make me drowsy at all as some have indicated. I am so relieved to have found this medicine. Without insurance it can be very expensive. I wish it was sold over the counter."