A rash is a noticeable change in the texture or color of the skin. The skin may become itchy, bumpy, chapped, scaly, or otherwise irritated. Rashes are caused by a wide range of conditions, including allergies, medication, cosmetics, and various diseases.

Contact dermatitis is a common cause of rashes. Contact rashes occur when you touch something that causes a reaction. Most contact rashes can be treated without the help of a doctor. A rash may be itchy, but scratching can make it worse and prevent it from healing.

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