The Most Common Allergy In The World

BLACK FRIDAY OFFER: Get 42% off of both CuriosityStream and Nebula when you sign up at by 11/28. The urushiol molecules in poison ivy have the ability to trigger a harmful immune response in most people because the immune system mistakenly labels them as a threat. LEARN MORE ************** To learn more about this topic, start your googling with these keywords: Allergy: A damaging immune response by the body to a substance. Allergen: The substance that causes the allergic reaction. Urushiol: The allergen in poison ivy and poison oak. Allergic Contact Dermatitis: An allergic response caused by contact with a substance that causes rash or lesions at the site of the exposure. Langerhans Cell: An immune sentinel that lives in the epidermis of the skin but can travel to nearby lymph nodes. Helper T Cell: A type of white blood cell that activates immune responses in the body. Thrush: A white skin rash caused by the fungus candida. Anaphylaxis: A whole body allergic react