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Infectious & ParasiticMildContagious
Chickenpox
Infectious Disease · Infectious & Parasitic
Mild
Severity
Before vaccine, approximately 4 million cases annually in the US. Now dramatically reduced due to vaccination.
Prevalence
Yes
Contagious
Infectious Disease
Specialist
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Warning Signs — When to Seek Immediate Help
- Sudden severe worsening of Chickenpox symptoms not responding to prescribed treatment
- Difficulty breathing, chest tightness, or rapid heartbeat associated with Chickenpox
- High fever (above 39 °C / 102 °F) that does not improve with medication after 24 hours
- Confusion, altered consciousness, severe weakness, or inability to stand or speak clearly
- Signs of rapidly spreading infection — increasing redness, swelling, or skin changes
- Symptoms occurring in infants, elderly (65+), pregnant women, or immunocompromised individuals
- No improvement after 48–72 hours of prescribed Chickenpox treatment
- New or different symptoms suggesting spread to other organ systems
More About Chickenpox
About the ChickenpoxCommon Symptoms of ChickenpoxCauses & Risk Factors of ChickenpoxHow Doctors Diagnose ChickenpoxTreatment Options for ChickenpoxChickenpox PreventionChickenpox ProgressionChickenpox Treatment CostFrequently Asked Questions About ChickenpoxAsk a Question About ChickenpoxConditions Related to Chickenpox
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⚕️ Medical Disclaimer
This page is for informational purposes only and does not substitute professional medical advice. Always consult a qualified healthcare professional. In emergencies, call 112.
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