Impetigo rash. The infected areas range from dime to quarter size. They start as tiny clusters of blisters that break open and reveal moist, red, raw skin that may look like other kinds of rashes at first. But after a few days, you'll get a grainy, golden crust that gradually spreads at the edges.

A viral rash can last a few days to a few weeks. It depends on the type of viral infection and how long it takes to run its course. Talk to a healthcare provider about how long your rash might last and how long you might be contagious.

Short-term use of nonprescription corticosteroid cream may offer short-term relief of itchy, inflamed skin. Or try calamine lotion or creams with menthol (Sarna, others), camphor, capsaicin, or a topical anesthetic, such as pramoxine (adults only).