is the most common type of allergic reaction that shows on the skin. Delayed allergies happen when different substances get on the skin and cause an itchy rash a day or two later. Poison ivy rashes ...

Immediate or delayed reactions to these medications can cause widespread rashes, hives, and other symptoms of an allergic reaction. Some of the most common medications associated with systemic ...

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

Medically reviewed by Renee Nilan, MDMedically reviewed by Renee Nilan, MD COVID arm rash is a delayed hypersensitivity ...

Food allergies in children are becoming increasingly common, but it can be hard for parents or caregivers to know how to spot ...

The ingredient in carmine causing these delayed hypersensitivity reactions has not been studied. In contrast, there are numerous reports of immediate hypersensitivity reactions from carmine ...