Varicella (Chickenpox)

• Fever
• Headache
• Loss of appetite
• Tiredness and a general feeling of being unwell (malaise)
• Itchy rash that develops into fluid-filled blisters
• Blisters that eventually burst, crust over, and form scabs
• Rash appearing first on the chest, back, and face, then spreading to the rest of the body

Chickenpox is caused by the varicella-zoster virus, a member of the herpes virus family.

Before vaccination began in 1995, chickenpox caused approximately 4 million cases annually in the U.S. Thanks to widespread vaccination (>90% coverage), cases have declined by more than 90%. However, breakthrough infections can still occur in vaccinated children, typically causing milder illness.

Treatment focuses on relieving symptoms. Keep your child comfortable with acetaminophen (Tylenol) for fever and pain (avoid aspirin due to Reye's syndrome risk). Calamine lotion, oatmeal baths, and cool compresses can help soothe the itch; keep fingernails short to prevent scratching and secondary infections.

The most effective way to prevent chickenpox is through vaccination. Keep your child home from school or daycare until all blisters have crusted over (usually 5-7 days after the rash appears) to prevent spreading the virus to others.

Track Varicella (Chickenpox) and other illnesses at your child's school in real time.