A case of leukocytoclastic vasculitis following influenza vaccination

LCV: leukocytoclastic vasculitis INTRODUCTION Leukocytoclastic vasculitis (LCV) is a small-vessel vasculitis that presents with palpable purpura, most often on the lower extremities. The most common identified triggers of LCVare infection or exposure to a new medication. However, in many cases, a cause cannot be identified. We present a patient who had LCV during the fall season of 2 consecutive years. A cause could not be identified at the time of the initial presentation. However, upon recurrence 1 year later, it was discovered that both episodes occurred 11 days after influenza vaccination.