An allergen is any substance that triggers an allergic reaction in some people. The immune system mistakenly identifies the allergen as harmful, even though it's usually harmless to most people. This triggers the immune system to release chemicals, such as histamine, which cause allergy symptoms.
Here are some common allergens:
- Food allergens: These include milk, eggs, peanuts, tree nuts, soy, wheat, fish, and shellfish.
- Inhalant allergens: These include dust mites, pet dander, pollen, and mold.
- Medications: These include penicillin, aspirin, and ibuprofen.
Insect stings: These include bee stings, wasp stings, and mosquito bites.
Latex: This is a protein found in natural rubber.
Allergic reactions can range from mild, such as a runny nose or itchy eyes, to severe, such as anaphylaxis, which is a life-threatening reaction that can cause difficulty breathing, swelling, and shock.
If you think you may be allergic to something, it is important to see a doctor to get tested and discuss treatment options.