Chronic hives can also be attributed to an autoimmune disorder or Mast Cell Activation Disorder. Have these been investigated?
I have tested positive to cats and horses, but symptoms are sneezing, itchy eyes, etc. My bouts of chronic hives (all over my body) last up to six months. Antihistamines help and a low histamine diet help, but my allergist thinks they are autoimmune. I also have Mast Cell issues with medications and insect bites. Those can trigger hives, but those just last for a day or so.
Post Edited (cyclinglady) : 4/19/2018 11:13:22 PM (GMT-6)