Cutaneous Vasculitis (Cutaneous Leukocytoclastic Vasculitis; Cutaneous Small Vessel Vasculitis; Leukoclastic Vasculitis; Cutaneous Leukocytoclastic Angiitis; Cutaneous Necrotizing Venulitis; Hypersensitivity Vasculitis) By Alexandra Villa-Forte, MD, MPH, Cleveland Clinic Reviewed / Revised Jun 2022 | Modified Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Key Points Topic Resources Livedo Reticularis Livedo Reticularis (Leg) Cutaneous Vasculitis (Lower... Cutaneous vasculitis refers to vasculitis affecting small - or medium-sized vessels in the skin and subcutaneous tissue but not the internal organs.