Crayfish allergy is an allergic reaction to proteins found in crayfish, a type of shellfish. Similar to other shellfish allergies, it can range from mild to severe and can be potentially life-threatening in some cases. People with crayfish allergy may react not only to eating crayfish but also to inhaling steam from cooking crayfish....
People with a crayfish allergy often have allergies to other types of shellfish. Cross-reactivity can occur with: