Food allergy and food intolerance are often confused, but they affect the body in very different ways. A food allergy ...

What Is a Peanut Allergy? You have a peanut allergy when your body’s immune system overreacts to peanuts. Normally, your immune system helps protect you from germs and other harmful substances. But if ...

A hazelnut allergy is a common type of tree nut allergy that usually begins during childhood. Avoiding hazelnuts is the best way to prevent associated allergic reactions. Tree nut allergies are ...

Allergic contact cheilitis (ACC) is allergic contact dermatitis (ACD) affecting lips. It causes swelling, inflammation, and possibly scaly skin. The term “cheilitis” refers to short- or long-term ...

An allergy involves a mild to life threatening immune response to an external substance. A sensitivity, on the other hand, is typically a milder reaction associated with difficulty digesting food. An ...

Infusion reactions, also known as acute infusion reactions or infusion-related reactions, are common adverse effects that can occur when a person receives medication intravenously. Infusion reactions ...