Many allergic reactions and anaphylaxis symptoms are similar because both conditions involve an allergic response from the immune system. Mild allergic reactions cause minimal symptoms ...

Medically reviewed by Jurairat J. Molina, MD Allergies are an immune system reaction to substances called allergens. The ...

Hives, also known as urticaria, are raised, itchy welts on your skin that occur due to an allergen. The reaction is uncomfortable, but it’s often not serious.

An allergic reaction, or when your immune system overreacts to a harmless substance, can sometimes manifest in the form of a rash. An allergy rash can be uncomfortable and lead to infections ...

Find out why stress can worsen allergy symptoms. Learn about the cellular chain reaction that occurs in the body and how it ...

Ian McKnight is researching the biological mechanisms underlying allergies, with the goal of developing new therapeutics to ...

Bee stings are not just a painful inconvenience; they are the result of a highly evolved biological defense mechanism. When a ...

Induces potent and long-lasting immune responses to defined antigens or whole pathogens (particles), mainly through the ...

Mild to moderate signs of food allergy include a swollen face, lips or eyes; hives or welts on your skin; or vomiting. A severe allergic reaction (called anaphylaxis) can cause trouble breathing, ...

Anxiety can cause physical reactions like rashes itching and hives Learn how stress affects the skin why anxiety makes you itch and effective ways to manage these symptoms for relief ...

The FDA issued a boxed warning for anaphylaxis risk linked to Glatiramer acetate and Glatopa, used in MS treatment.