- Food allergy testing helps identify IgE-mediated allergies, which occur when the immune system produces antibodies that trigger allergic reactions to certain foods.
- Signs of a food allergy may include swollen lips, facial rashes, or hives after eating a particular food. Parents should contact their pediatrician if these symptoms occur.
- Skin prick testing involves applying small amounts of allergens to the skin using devices similar to toothpicks. A red, itchy bump may indicate an allergic reaction. Positive and negative controls help confirm the test is working properly.
- Common food allergies in children include peanuts, tree nuts, milk, and eggs. Testing can also identify allergies to fish, shellfish, and certain seeds.
- Some childhood food allergies may resolve over time. Approximately 80% of children outgrow milk and egg allergies, while peanut and tree nut allergies tend to last longer. Skin prick testing does not diagnose digestive issues unrelated to IgE-mediated allergies.
How Does Food Allergy Testing Work for Children
Learn how skin prick testing helps identify food allergies in children, which foods commonly cause reactions, and why some childhood allergies may resolve over time.
Sarah Taylor-Black, MD
