Which physical findings are characteristic of postherpetic neuralgia (PHN)?

Updated: Mar 06, 2018
  • Author: W Alvin McElveen, MD; Chief Editor: Robert A Egan, MD  more...
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See the list below:

  • Area of previous HZ may show evidence of cutaneous scarring.

  • Sensation may be altered over involved areas, in the form of either hypersensitivity or decreased sensation.

  • Allodynia is pain produced by a non-noxious stimulus, such as a light touch by a brush, and may be present over the involved area.

  • Changes in autonomic function such as increased sweating over the involved area may be seen.

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