A rash is a change in the skin due to skin irritation. Most rashes go away on their own or require only minor treatment. Some rashes may need medical attention. Some rash symptoms are redness, itching, bumps, redness, and swelling. Some causes of rashes are allergic reactions; plants such as poison ivy; or irritation due to jewelry, chemicals, or makeup. Rashes are also sometimes symptoms of another condition, as with impetigo or scabies. Treatments vary based on the cause, but many can be treated with medications. Follow the links below to find WebMD's comprehensive coverage about what causes a rash, what it looks like, how to treat it, and much more.
Do I Have a Nickel or Jewelry Allergy?
Nickel is in lots of things – jewelry, cell phones, eyeglass frames, and more. Are you allergic to it?
Skin Allergies: What Your Doctor Will Do
If you have skin reactions from coming in contact with something you're allergic or sensitive to, you may decide to see a doctor. Here's what to expect.
What Causes Jock Itch? Can You Prevent It?
If you have an itchy rash, “down south,” it could be jock itch. Here’s what you need to do to treat and prevent it.
Do I Have Eczema, and How Do I Treat It?
Here's what your doctor will check and what treatments she'll consider if you have eczema.
Sensitive Skin: Is It a Myth?
Sensitive skin is a common complaint but hard to diagnose. No two people have the same symptoms or react to the same triggers.
3 Questions About Eczema: Symptoms, Causes, and Prevention
WebMD interviews Asriani M. Chiu, MD, for answers to three top questions about eczema symptoms, eczema causes, and how to prevent eczema.
Slideshows & Images
Guide to Contagious Rashes
Some skin problems come from touching another person's skin or something they touched. Here's what to watch out for and suggestions for what you can do.
Slideshow: A Visual Guide to Viral Rashes
Your skin breaks out in itchy rashes, painful blisters, or crusty sores. Allergies? Eczema? The answer could be a viral infection.
Slideshow: Itches, Rashes, Bumps and Other Adult Skin Problems
Is your skin itching, breaking out, covered in a rash, or playing host to spots of some sort? It may be the result of infection, a chronic skin condition, or contact with an allergen or irritant. Learn to spot skin problems commonly seen in adults.
Picture of Scurvy
Scurvy. Perifollicular hemorrhage on the leg. The follicles are often plugged by keratin (perifollicular hyperkeratosis). This eruption occurred in a 46-year-old alcoholic, homeless male, who also had bleeding gums and loose teeth.