Chickenpox

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Basics

• Summary
• Start Here
• Symptoms
• Diagnosis and Tests
• Prevention and Risk Factors
• Treatments and Therapies

Learn More

• Related Issues
• Specifics

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• Images

Research

• Clinical Trials
• Journal Articles

Resources

• Find an Expert

For You

• Children
• Adults
• Patient Handouts

Summary

Chickenpox is an infection caused by the varicella-zoster virus. Most cases are in children under age 15, but older children and adults can get it. It spreads very easily from one person to another.

The classic symptom of chickenpox is an uncomfortable, itchy rash. The rash turns into fluid-filled blisters and eventually into scabs. It usually shows up on the face, chest, and back and then spreads to the rest of the body. Other symptoms include:

• Fever
• Headache
• Tiredness
• Loss of appetite

Chickenpox is usually mild and lasts 5 to 10 days. Calamine lotions and oatmeal baths can help with itching. Acetaminophen can treat the fever. Do not use aspirin for chickenpox; that combination can cause Reye syndrome.

Chickenpox can sometimes cause serious problems. Adults, babies, teenagers, pregnant women, and those with weak immune systems tend to get sicker from it. They may need to take antiviral medicines.

Once you catch chickenpox, the virus usually stays in your body. You probably will not get chickenpox again, but the virus can cause shingles in adults. A chickenpox vaccine can help prevent most cases of chickenpox, or make it less severe if you do get it.

Centers for Disease Control and Prevention

Start Here

• About Chickenpox (Centers for Disease Control and Prevention) Also in Spanish
• Chickenpox (Nemours Foundation)
• Chickenpox (Varicella) (VisualDX)
• Chickenpox Vaccination: What Everyone Should Know (Centers for Disease Control and Prevention)
• First Aid: Chickenpox (Nemours Foundation)

Symptoms

• Chickenpox (Varicella) Signs and Symptoms (Centers for Disease Control and Prevention) Also in Spanish

Diagnosis and Tests

• Antibody Serology Tests (National Library of Medicine) Also in Spanish
• Chickenpox and Shingles Tests (National Library of Medicine) Also in Spanish

Prevention and Risk Factors

• Chickenpox (Varicella): Transmission (Centers for Disease Control and Prevention) Also in Spanish
• Chickenpox Vaccine (American Academy of Family Physicians) Also in Spanish
• MMRV (Measles, Mumps, Rubella, and Varicella) Vaccine: What You Need to Know (Centers for Disease Control and Prevention) - PDF Also in Spanish
• Vaccine (Shot) for Chickenpox (Centers for Disease Control and Prevention) Also in Spanish
• Varicella (Chickenpox) Vaccine: What You Need to Know (Centers for Disease Control and Prevention) - PDF Also in Spanish

Treatments and Therapies

• Chickenpox Prevention and Treatment (Centers for Disease Control and Prevention) Also in Spanish

Related Issues

• Postherpetic Neuralgia (Mayo Foundation for Medical Education and Research) Also in Spanish
• Reye Syndrome (Nemours Foundation) Also in Spanish
• Travelers' Health: Varicella / Chickenpox (Centers for Disease Control and Prevention)

Specifics

• Chickenpox (Varicella) Complications (Centers for Disease Control and Prevention) Also in Spanish

Images

• Chickenpox (Varicella) Photos (Centers for Disease Control and Prevention) Also in Spanish

Clinical Trials

• ClinicalTrials.gov: Chickenpox (National Institutes of Health)

Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)

• Article: Using Baidu Index Data to Improve Chickenpox Surveillance in Yunnan, China:...
• Article: Impact assessment of immunization and the COVID-19 pandemic on varicella across...
• Article: Varicella Zoster Virus infects mucosal associated Invariant T cells.
• Chickenpox -- see more articles

Find an Expert

• Centers for Disease Control and Prevention Also in Spanish
• National Institute of Allergy and Infectious Diseases

Children

• Chickenpox (Nemours Foundation) Also in Spanish
• What Makes Chickenpox Itch? (Nemours Foundation) Also in Spanish

Adults

• Why Vaccinate Adults Against Chickenpox (National Foundation for Infectious Diseases)

Patient Handouts

• Chickenpox (Medical Encyclopedia) Also in Spanish
• MMRV (Measles, Mumps, Rubella, and Varicella) Vaccine: What You Need to Know (Centers for Disease Control and Prevention) - PDF Also in Spanish
• Varicella (Chickenpox) Vaccine: What You Need to Know (Centers for Disease Control and Prevention) - PDF Also in Spanish