What is the basis for chickenpox (varicella) diagnosis?

Updated: Aug 31, 2020
  • Author: Anthony J Papadopoulos, MD; Chief Editor: Dirk M Elston, MD  more...
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Chickenpox is usually diagnosed clinically on the basis of the characteristic rash and successive crops of lesions. Lesions may be found in all stages of development and healing in affected sites. A history of exposure to an infected contact within the incubation period of 10-21 days is also an important clue in the diagnosis.

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