I've been doing research yesterday and today to try and understand it. If anyone else has it or is an allergist, advice would be appreciated. I have an appointment with an allergist today. It really sucks becuase I love eating shellfish...especially shrimp. Here's the story... Saturday night the girl and I went out for dinner. I had 8 garlic shrimp, artichoke rissoto and steamed veggies. As soon as we came home (30mins. after eating) I was beet red with blotches all down my chest and to about mid tricep on the backside. At an hour I was having difficulty breathing and started to contemplate the ER. Luckily my neighbor came over with prescription benadryl. 15 mins. after taking it I started to feel normal. Scary stuff. No more shellfish for me.