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  • The chickenpox rash is a rash all over the body. It starts as small red bumps. The bumps change to blisters or pimples. The bumps change to open sores, and finally they scab over.
  • Caused by the chickenpox virus.


  • Chickenpox starts with some small water blisters or pimples on the head and trunk.
  • Chickenpox progress within 24 hours through the next 5 stages:
  • 1) small red bumps
  • 2) thin-walled water blisters
  • 3) cloudy blisters
  • 4) open sores, and finally
  • 5) dry brown crusts.
  • Rash is all over the body. Most often, starts on the head and back.
  • Repeated crops of new chickenpox keep appearing for 4 to 5 days. Therefore, all 5 stages are present at same time.
  • Sores (ulcers) can also occur in the mouth, on eyelids, and on genitals.
  • Fever is most often present. The more the rash, the higher the fever.
  • Known contact to a child with chickenpox 10 - 21 days earlier
  • Main complication: Skin infections from scratching.


  • Chickenpox is caused by a virus. It is called Varicella. Chickenpox can be prevented by getting this vaccine.

Return to School

  • Your child can go back to school after all the sores have crusted over. Most often, this is day 6 or 7 of the rash.


The information contained in these topics is not intended nor implied to be a substitute for professional medical advice, it is provided for educational purposes only. You assume full responsibility for how you choose to use this information.

Always seek the advice of your physician or other qualified healthcare provider before starting any new treatment or discontinuing an existing treatment. Talk with your healthcare provider about any questions you may have regarding a medical condition. Nothing contained in these topics is intended to be used for medical diagnosis or treatment.

  • Not a Substitute - The information and materials in Pediatric HouseCalls Symptom Checker should not be used as a substitute for the care and knowledge that your physician can provide to you.
  • Supplement - The information and materials presented here in Pediatric HouseCalls Symptom Checker are meant to supplement the information that you obtain from your physician. If there is a disagreement between the information presented herein and what your physician has told you -- it is more likely that your physician is correct. He or she has the benefit of knowing your child's medical problems.
  • Limitations - You should recognize that the information and materials presented here in Pediatric HouseCalls Symptom Checker have the following limitations, in comparison to being examined by your own physician:
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    • Your child's doctor can perform a physical examination and any necessary tests.
    • Your child could have an underlying medical problem that requires a physician to detect.
    • If your child is taking medications, they could influence how he experiences various symptoms.

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