A case of granuloma annulare that developed in a site of healed herpes zoster is reported. Polymerase chain reaction failed to detect VZV DNA in a biopsy specimen. The occurrence of different types of cutaneous reactions in a body area previously affected by herpes virus infection is known as Wolf’s isotopic response. Pathogenesis may be due to a local neuroimmune dysregulation set off by herpesvirus-induced lesions of dermal sensory nerve fibres.
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