Shellfish Allergy

Definition

A shellfish allergy is an abnormal response by the body's immune system to proteins found in certain aquatic animals, such as shrimp, crab, and lobster.

Scientific / Technical Definition

Shellfish allergy involves an IgE-mediated immune response to proteins found in marine and freshwater animals classified as crustaceans (like shrimp, crab, and lobster) or mollusks (like clams, oysters, and mussels). This type of allergy can potentially cause severe reactions, including anaphylaxis.

Benefits

Examples

• Shrimp
• Crab
• Lobster
• Clams
• Oysters

Additional Information

• Known issues: Exposure to shellfish allergens can cause reactions ranging from mild hives or nasal congestion to life-threatening anaphylaxis.

Related Terms

• Food Allergies
• Crustacean Allergy
• Mollusk Allergy
• Histamine Intolerance
• Anaphylaxis

References

• Shellfish Allergy Overview by the American College of Allergy, Asthma, and Immunology
• Shellfish Allergy Information from the Mayo Clinic