What is herpes zoster?

Updated: Nov 30, 2018
  • Author: Kirsten A Bechtel, MD; Chief Editor: Russell W Steele, MD  more...
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A delayed complication of varicella, herpes zoster infection, occurs months to years after the primary infection in about 15% of patients. The complication is caused by virus that persists in the sensory ganglions.

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