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Background Hypocomplementemic urticarial vasculitis syndrome (HUVS) is a rare disease due to small vessel inflammation and characterized by chronic urticarial vasculitis and arthritis. Multi-organ manifestations may include glomerulonephritis, ocular inflammation (uveitis, episcleritis), and recurrent abdominal pain. To the best of our knowledge, just other nine cases of HUVS with cardiac valvular involvement have been reported in the literature. Case summary A 32-year-old woman presented to the emergency department because of a cerebral haemorrhage. She suffered from a severe HUVS form with cardiac valvular involvement. In the previous years, she underwent cardiac surgery twice for aortic and mitral valves immune-mediated degeneration. The neurologic event was secondary to Listeria monocytogenes aortic endocarditis, complicated by a cerebral embolism and periaortic abscess. Discussion Patients with HUVS rarely present valvular heart disease. The latter is mostly secondary to an inflammatory process. Valve degeneration and immunosuppressive therapy increase the risk of infective endocarditis, with dramatic consequences for the prognosis of these patients. Valvular involvement is a sporadic but potentially fatal complication of HUVS, which should be taken in mind in the multidisciplinary evaluation of these patients.

european heart journal. case reports

Heart valve disease in hypocomplementemic urticarial vasculitis syndrome: from immune-mediated degeneration to embolic complications of infective endocarditis—a case report