A rash is an area of irritated or swollen skin. Rashes may be itchy, red, painful, and irritated. Some rashes can also lead to blisters or patches of raw skin. Rashes are a symptom of many different medical problems. Other causes include irritating substances and allergies.

Contact dermatitis is the most common type of rash. It causes redness, itching, and sometimes small bumps. You get the rash where you have touched an irritant, such as a chemical, or something you are allergic to.

Some rashes develop right away. Others form over several days. Although most rashes clear up fairly quickly, others are long-lasting and may need long-term treatment.

Because rashes can be caused by many different things, it is important to see a health care provider so that we can correctly diagnose and treat it appropriately.