A new study on severe allergic reactions raises a red flag for people with nut allergies. More broadly, the study's findings ...

Hives, also known as urticaria, are raised, itchy welts on your skin that occur due to an allergen. The reaction is ...

Reports of anaphylaxis associated with the use of glatiramer acetate have prompted the Food and Drug Administration (FDA) to add a Boxed Warning to the prescribing information.