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Chickenpox (Varicella)

Medically reviewed by: Yamini Durani, MD

Also called: Varicella

What Is Chickenpox?

Chickenpox is a viral infection that causes fever and an itchy rash with spots all over the body.

It used to be a common childhood illness in the United States, especially in kids under age 12. It's much rarer now, thanks to the varicella vaccine.

What Are the Signs & Symptoms of Chickenpox?

Chickenpox often starts without the classic rash, with a fever, headache, sore throat, or stomachache. These symptoms may last for a few days, with the fever in the 101°–102°F (38.3°–38.8°C) range.

The red, itchy skin rash usually starts on the belly or back and face. Then it spreads to almost everywhere else on the body, including the scalp, mouth, arms, legs, and genitals.