Pediatric P-ANCA vasculitis following COVID-19.

Background: Perinuclear anti-neutrophil cytoplasmic antibodies (P-ANCA) are associated with a multisystem vasculitis affecting small blood vessels in the body. A handful of adult patients who developed vasculitis post-COVID-19 have been reported. Although SARS-CoV-2 has been shown to drive an exaggerated immune response in the pediatric population, such as in Multisystem Inflammatory Syndrome in Children (MIS-C), only one case of vasculitis following COVID-19 has been reported previously in children.