Hi
At the ripe old age of 41 it appears that I have developed a shellfish allergy. I do eat shrimp and never had a problem. I just recently tried Alaskan King Crab. I have only had it maybe 5 times. The last time I had it the next morning when I woke up my chest, stomach, and upper arms were covered in hives-- though they didn't itch. It took 2 weeks for them to go away on their own.
My questions are:
1. Why does this suddenly happen?
2. Will this allergy lead to me being allergic to all shellfish? or can it just remain a crab allergy?
3.Last night I had shrimp. I was fine. Should I stay away?