Allodynia, or pain produced by a non-noxious stimulus, such as a light touch by a hairbrush, may be present in the involved area of previous herpes zoster in patients with PHN. Other evidence of PHN that may be picked up by physical examination includes: evidence of cutaneous scarring; altered sensation, such as hypersensitivity or decreased sensation; and changes in autonomic function, such as increased sweating.
Learn more about the physical examination for a person with PHN.
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Cite this: Jason F. Okulicz. Fast Five Quiz: Herpes Zoster Postherpetic Neuralgia - Medscape - Jun 01, 2020.