Food allergy
A food allergy is an immune system response to a particular food. When someone with a food allergy eats or comes into contact with even a tiny amount of the allergen, its immune system releases histamine and other chemicals, which can cause symptoms ranging from mild to severe. Some common food allergens include peanuts, tree nuts, fish, shellfish, milk, eggs, soy, and wheat.
Symptoms of a food allergy can include:
Hives or rash
Swelling of the lips, face, tongue, or throat
Difficulty breathing or wheezing
Dizziness or lightheadedness
Anaphylaxis is a severe and potentially life-threatening reaction that requires immediate medical attention.
Avoiding the allergen is the best way to prevent an allergic reaction. If you suspect that you or someone you know has a food allergy, you must see a doctor for diagnosis and treatment. Still, in some cases, medication or immunotherapy may be necessary.