Common Food Allergens That Can Cause Itchy Skin

The most common food allergens are milk, eggs, peanuts, tree nuts, wheat, soy, fish, shellfish, and sesame; any of them can cause hives or itchy skin in someone who is allergic. Peanuts and tree nuts are different allergens, as are fish and shellfish, so a reaction to one does not automatically mean you must avoid the other.

Check the product’s listed specifications when evaluating which foods most often cause allergic skin reactions.

Hives are raised, itchy welts that may appear soon after eating, while an allergic reaction can also cause redness or swelling around the lips, eyes, or face. Eczema can flare for many reasons, so a recurring rash alone is not enough to identify a particular food as the trigger.

Check the product’s listed specifications when evaluating what does a food-related skin reaction look like.

Write down what you ate, when symptoms started, what they looked like, and whether you had symptoms such as vomiting, coughing, or dizziness. Our Beauty Checklist: Food Allergies & Skin Reactions is a place to start thinking through skin reactions and possible food triggers, but we recommend discussing a suspected allergy with a qualified healthcare professional rather than cutting out several foods on your own.

Skin symptoms accompanied by trouble breathing, throat tightness, faintness, or repeated vomiting may signal a severe allergic reaction: use prescribed epinephrine if available and seek emergency care immediately. If you have had a milder but repeatable reaction to a food, avoid that suspected food until you can get individualized advice about evaluation and what to eat safely.