Dental Work may have in my case ,I ,had tooth
extracted and a root canal
, is it the Numbing agent Nova caine or Lidacaine or the stuff they put in the root
canal or Latex gloves , on searching I see you can ask for gloves that are made of a non allergic stuff.thses are big welts and they Burn ,I tried Hydroxyline anti histimine after 10 days the itching eased a bit but nthen I got Horrible pains like it was a Gall bladder attack,so stopped them, So that is my Horrible Hive Story!!