"Sarcastic" is merely a mild form of "jerk."
Anywho... I'm also allergic to crustaceans. Mind you, I can eat crustaceans without a problem, but the juices irritate my skin. Might be what they were cooked in, I'm not sure. I have the reaction when I peel and eat shrimp, king crab, crayfish, and lobster. The skin on my hands will turn red, itch, and get puffy. I dunno if it happens when I eat clams, mussels, or oysters, as I haven't had those in so long and the last time I ate oysters and clams, I got pretty sick to my stomach. So, I dunno.
I also get a skin reaction from the adhesive from bandage tape. Only a certain kind, though, the plastic kind. I get what looks like a bright red bruise where the adhesive was in contact with my skin.