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

A sun rash is an immune system reaction to sunlight exposure that causes itchy bumps, raised patches, or blisters on your ...

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 ...

Allergic reactions to mold can be immediate or delayed, so it can be hard to identify mold as the source of a new rash or ...

Infants can develop allergic reactions for various reasons, as they have sensitive skin and are more likely to develop a rash from even slight irritation. The following are common kinds of ...

However, a chlorine rash is a reaction to coming into contact with chlorine, while swimmer’s itch is caused by an allergic reaction to microscopic parasites that live in bodies of fresh or salt ...

Cortisol may also cause your body to release histamine, a chemical that triggers skin reactions like hives and a rash. Everyone experiences stress, and stress-induced hives and rashes may be more ...

A new study reveals scratching a rash has upsides -- along with the ... comes into contact with a substance that causes an allergic reaction, such as poison ivy or metals like nickel in jewelry.

The urge to scratch these rashes can sometimes be irresistible ... in a wide range of inflammatory skin conditions and allergic reactions, they’re important for protecting the skin against ...