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Chickenpox (Varicella) - Symptoms

The incubation period-the time from exposure to the chickenpox virus until you have symptoms-is usually 14 to 16 days but can be from 10 to 21 days. The first symptoms of chickenpox infection include:

  • A fever of 100.4°F (38°C) to 103°F (39.4°C).
  • Feeling sick, tired, and sluggish.
  • Little or no appetite.
  • Headache and sore throat.

The first symptoms are usually mild in children, but they can be severe in teens and adults. These symptoms may continue throughout the illness.

About 1 or 2 days after the first symptoms of chickenpox appear, an itchy rash camera develops. During a typical course of chickenpox:

  • Red or swollen spots or bumps appear and turn into blisters that are filled with clear or cloudy fluid and that look like pimples.
  • The blisters break open, often leaking fluid.
  • A dry crust forms over the broken blisters as they heal.

Chickenpox is most contagious from 2 to 3 days before the rash appears until all the blisters have crusted over.

Other conditions may cause a similar rash.

WebMD Medical Reference from Healthwise

Last Updated: July 30, 2010
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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