Noma
If your hives return, you must be allergic to something you keep doing, eating, or medications you're taking. When I had sinus infection, I was given Amoxicillian and broke out in a rash. The doctor then gave me Levaquin which is "as far away from penicillin" that he could get. I broke out in hives. I then checked out Zestril (my high blood pressure medicine that I had been taking for over 2 years) online and found out that can also cause hives. My doctor took me off Zestril and in two weeks, my hives were gone. Let us know if you find the cause and cure.