Systemic Vasculitis Post-COVID-19: A Case Report.

Vasculitis is one of the complications of COVID. Coronavirus may trigger or exacerbate autoimmune diseases, such as systemic vasculitis. We present the case of an elderly individual with a medical history that includes recurrent urinary tract infections, hyperlipidemia, essential hypertension, and peripheral vascular disease. Doctors suspected vasculitis due to declining renal function, clinical condition, and serological findings of the patient. His serum tested positive for antinuclear antibodies. A kidney biopsy was deemed necessary due to the unclear cause of his renal insufficiency. The biopsy revealed focal necrotizing and crescentic glomerulonephritis (GN), a pauci-immune type. It is essential to learn more about COVID-19 and its related complications. This case highlights the difficulties of COVID-19, leading to focal necrotizing and crescentic GN. Maintaining a broad differential is essential while treating a patient who has recovered from the initial infection. This research is important because it will help clinicians to identify this perspective while treating patients. We also review some related articles on the association of COVID-19 with vasculitis.