Wondering if anyone else has urticaria only with exertion? I started having chronic urticaria 24 years ago (while pregnant). I only get it with certain foods such as vinegar, emotions/stress or while exercising. I've been to dermatologists, tried anti-histamines, etc., without any luck. Finally a close friend who is a Vascular Surgeon told me to try taking both Zyrtec (10mg) and Pepcid (50 - 100 mg) at least an hour prior to exercise. It has worked great for me! These are both OTC drugs. Hope this helps someone!