8 doctors weighed in:

How long should chicken pox last on a 10 yr old child?

8 doctors weighed in
Dr. James Ferguson
Pediatrics
5 doctors agree

In brief: Blisters dry ~7dys

Blisters come up in crops over about 7 days.
The kid is considered contageous until the last blister is dry, but the general period of 7 days from first blister + 1-2 days before. The blister wound will dry and heal primaiily that first 7 days. It may take 6 wks for the skin to feel smooth where the spots were, and the skin pigment may irregular for a year.

In brief: Blisters dry ~7dys

Blisters come up in crops over about 7 days.
The kid is considered contageous until the last blister is dry, but the general period of 7 days from first blister + 1-2 days before. The blister wound will dry and heal primaiily that first 7 days. It may take 6 wks for the skin to feel smooth where the spots were, and the skin pigment may irregular for a year.
Dr. James Ferguson
Dr. James Ferguson
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Dr. Mark Diamond
Pediatrics
4 doctors agree

In brief: 7-10 days

Until totally scabbed and no new ones appear.Usually 7-10 days.

In brief: 7-10 days

Until totally scabbed and no new ones appear.Usually 7-10 days.
Dr. Mark Diamond
Dr. Mark Diamond
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Dr. Michael Fisher
Dermatology
3 doctors agree

In brief: Chicken pox

It usually takes about 10-21 days for all the blisters to scab over and heal.
  after all the blisters and scabs are completely gone, the chicken pox contagious period is over and you are back to normal health.

In brief: Chicken pox

It usually takes about 10-21 days for all the blisters to scab over and heal.
  after all the blisters and scabs are completely gone, the chicken pox contagious period is over and you are back to normal health.
Dr. Michael Fisher
Dr. Michael Fisher
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