Question: how to know if you're allergic to oysters?
Answer: tingling in the mouth., abdominal pain, nausea, diarrhea, or vomiting., congestion, trouble breathing, or wheezing., skin reactions including itching, hives, or eczema., swelling of the face, lips, tongue, throat, ears, fingers, or hands., lightheadedness, dizziness, or fainting.