Have you ever had a red, itchy rash on your skin? Then you've had dermatitis.
Dermatitis is an irritation or swelling of the skin.
There are lots of different kinds of rashes — some have bumps, some have
blisters, and some are dry and scaly. They can be caused by a chemical (like a soap)
that irritates your skin, or happen when you touch something you're allergic to (like
poison ivy). Skin conditions
like eczema or dandruff also can cause a rash.