Poison ivy and poison oak cause a blistering red rash that can sometimes appear with black spots. The rash is caused by urushiol oil, a chemical these plants release.

A rash on skin of color may be red, brown, purple, or gray, depending on the cause. Here, learn about how various common rashes, such as eczema, present.

Measles in Tennessee: What are the symptoms and what to know about multi-state outbreak All three involved in Tuesday's confirmed cases and the March 21 case are recovering at home. Public health ...