A case of synchronous herpes zoster infection and leukocytoclastic vasculitis localized to the same dermatome.

Leukocytoclastic vasculitis (LCV) is a small-vessel vasculitis that presents with palpable purpura. The most common identified triggers of LCV are infection or exposure to a new medication. Herpes zoster (HZ) occurs as a result of the reactivation of the varicella-zoster virus (VZV). VZV is able to infect endothelial cells directly, producing a spectrum of vasculitides, including that of large and medium vessels. We report a case of a patient with synchronous HZ infection and segmental small-vessel vasculitis.