about 10 years ago my eye or a part of my lip would swell when eating random foods. It swelled when i ate cheesecake, a raspberry pastry, even drinking passion fruit juice to name a few. I went to an allergist in 2014 and got an allergy test, both the skin test and blood test. It was negative for all the foods i was tested for. My lip still swelled randomly so I went back a couple weeks ago and got the same tests. The skin test were all negative but now the blood test shows some reaction to lobster, shrimp, and crayfish. I'm shocked because although i dont eat shrimp often, i had some about a month ago and everything seemed fine. Has this happened to anyone? One of my biggest fear is anaphylaxis. So i guess now i have to make sure i know if shellfish is an ingredient in the foods i eat.