I do ha e a diagnosed allergy to crusteans.shrimp & crab know. I also have had 2 serious reactions one from contrast dye of an angiogram after a heat attach. I am 66, no heart damage nor reoccurrence in 3 years but have developed acne or similar outbreak on my face. I was tested and put on doxycycline. It clears up and comes back. Is it possible the iodine in my food could be causing outbreaks? It is a clear sticky fluid which does not heal fast. Often creams make it worse.