Go to the glossary about SR, dysautonomia, allergy and stress. Then go where they take you. ALL of these are contributing to your suscpetibility. THEN, if you still have questions, write again. Chronic urticaria is just a fancy name for the next step up from hives.
Docs use it to maintain the mystery of medical nomenclature.
Dermatographia is a VERY common precursor for both. Taking everything from clariton to atarax to steriod shots. A steriod shot every now and then helps for about amonth or so. I have also found with exercising like playing rcaquetball the hives deminished. When I stoped exercising the hives came back.