Seafoo allergy is a type of food allergy. It is a hypersensitivity to dietary substances from shellfish, scaly fish, or crustaceans, causing an overreaction of the immune system which may lead to severe physical symptoms for millions of people. The Asthma and Allergy Foundation of America estimates that the majority of pediatric and adult food allergy patients have a seafood allergy. It occurs mainly, but not exclusively, in children. It is usually treated with an exclusion diet and vigilant avoidance of foods that may be contaminated with shellfish or fish ingredients and/or oils. The most severe seafood allergy reaction is called anaphylaxis and is an emergency requiring immediate attention and treatment with Epinephrine, which is administered with the Epipen. For prevention when an attack is evident but not at the fatal stage use benadryl quick dissolve which can dampen the effects and symptoms of a fish allergy.