Why do I break out in hives sometimes when I eat shellfish, but not all the time?
I always eat mussels,clams, calamari, scallops with no problem. I always eat soft shell crab and jumbo lump crab. Last week I had some Texas shrimp and broke out in hives. Last month I had jumbo lump crab from Mexico and broke out in hives. Could it be that I have a reaction to gulf seafood since the other seafood I eat comes from elsewhere? Is there such a thing?