Had an allergist tell me last year that I oysters and peanuts was at the top of my allergy list and he told me never to be without one of those needle pens to inject myself to keep from dying if I accidentally ate any shell fish or peanuts. Still eat them.
I found out the hard way I am allergic to shell fish, although it is to fish as a whole to a much lessor degree.
When I ate fish as a youngster, after a while, it would feel like there was some thing stuck in my throat. Dad always said I swallowed a bone.
I found out years later my allergy causes my throat to swell, that was the feeling I get.
For what ever reason, I can eat fried fish, and a lot of them, before the feeling comes but if I eat one bite of lobster, I am in a world of hurt.
I can also eat tuna fish salad but I put onions, mustard, horseradish, chopped pickles and salary in there also, so it seems to have the same neutering effect on what ever is in there that gets me, as by the time I feel it, I am pigging out.
One time though, my girl friend made me some tuna fish sandwiches, her way, as favor before I left on a trip.
I did not make my throat really swell but for two days when ever I sat down, it felt like some one was trying to cut their way out of my chest. I sat down very, very slowly.
It finally stopped when one night I sounded like an idling steam engine as I breathed.
When I woke up, it was all cured.