Vitiligo on tribal mark: A demostration of Wolf’s isotopic response

Background: Wolf’s isotopic response is the development of new lesions on old scar. Although this phenomenon is uncommon, most of the reported cases have been associated with development new lesions on the previously healed scar of herpes zoster infections. Case Report: Our patient is 74 year old woman with generalized vitiligo who demonstrated Wolf’s isotopic response by developing new lesions of vitiligo along the track of old scar (tribal mark). Conclusion: The exhibition of Wolf’s Isotopic response on old tribal mark, may transform a benign, asymptomatic tribal mark into a clinically significant feature which may aid the diagnosis of vitiligo.