What is a fish and/or shellfish allergy?
A fish/shellfish allergy is caused by an immune reaction against the protein in fish and shellfish. A fish/shellfish allergy results when antibodies against fish/shellfish allergens are produced by the immune system. The combination of the allergen and antibody produces a series of reactions and symptoms typical to an allergic reaction. Allergic reactions to fish and shellfish are commonly reported in both adults and children. It is recommended that individuals, who have had an allergic reaction to one species of fish, avoid all fish and/or shellfish. Symptoms The most common symptoms include: nasal congestion, hives, itching, swelling, wheezing or shortness of breath, nausea, upset stomach, cramps, heart burn, diarrhea, lightheadedness, or fainting. Allergic reactions to fish and shellfish can be severe and are often a cause of anaphylaxis (life-threatening). Treatment Reactivity to fish and/or shellfish is an allergy that is usually life-long. A totally fish/shellfish-free diet is ne