How is the pain of acute herpes zoster (shingles) differentiated from that of postherpetic neuralgia (PHN)?

Updated: Feb 11, 2021
  • Author: Camila K Janniger, MD; Chief Editor: Dirk M Elston, MD  more...
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It should be noted that whereas acute zoster pain and PHN are believed to result from different pathophysiologic mechanisms, it is clinically and experimentally impossible to determine precisely when the 2 types of pain cross over. Accordingly, some workers use the term zoster-associated pain to describe both acute and chronic pain as a continuum.

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