Hello, I too had itchy red skin AND HIVES only after stopping Tapazole. Which can sometimes happen. And then it all got even worse when started back on the Tapazole to prepare for surgery. You should definately call your doctor and report this…I did not have a real “severe” reaction, mine was controlled by Benadryl to keep me under control until surgery, but just because that is all you are experiencing NOW, doesn’t mean it cannot get worse and become life threatening. Sometimes it can take a while to get that severe if you continue use. CALL YOU DOCTOR NOW!!!!! Just because it took 12 days doesn’t mean it wont get more dangerous for you.
Good Luck,
Missy