seafood allergies symptoms
People with allergies to fish and shellfish can experience any of the classic food allergy symptoms.
These include:Nasal congestion, Hives, Itching, Swelling, Wheezing or shortness of breath, Nausea, Upset stomach, cramps, heartburn, gas or diarrhea, Lightheadedness or fainting.
Food poisoning symptoms can mimic those of food allergies, but they are distinct problems. Fish and shellfish spoil easily. In some cases, spoiled fish can contain histamine, a substance that causes hives and flushing. If someone eats the spoiled fish, they can have symptoms similar to an allergic reaction. But this is actually a type of food poisoning.
If you suspect that you have any food allergies, see an allergist for a careful evaluation. This generally includes a medical history, physical exam, and skin or blood testing.