Allergen Information Center

One of the most common food allergens that can cause severe reactions such as anaphylaxis.

Allergy to tree nuts like walnuts and almonds can be severe, causing hives, swelling, and even anaphylaxis.

Proteins in natural latex (found in gloves, balloons, etc.) can trigger hives, itching, and sometimes anaphylaxis.

Skin contact with nickel (e.g., in jewelry) usually causes contact dermatitis – itchy rashes at the point of contact.

Bee venom can cause rapid and severe reactions; in allergic individuals, it may lead to anaphylaxis, which is life-threatening.

Wasp stings can be extremely painful and lead to swelling, redness, and allergic reactions. In some cases, severe anaphylaxis may develop, requiring immediate medical attention.

The urushiol oil in poison ivy leaves causes severe contact dermatitis, with red, itchy rashes and blisters appearing 1–2 days after contact.