Non-Histaminergic Angioedema Following Infection with COVID-19

Non-respiratory manifestations of COVID-19, including dermatological manifestations, have been reported, and although urticaria associated with COVID-19 has been reported, there have been no reports of non-histaminergic angioedema following infection with mild COVID-19. Non-histaminergic angioedema has a gradual onset and is characterized by submucosal swelling without accompanying urticaria or pruritus, and poor response to antihistamines and corticosteroids. We report a case of non-histaminergic angioedema in a 29-year-old woman with a history of mild COVID-19 infection. Our case highlights the fact that early diagnosis of non-histaminergic angioedema in mild COVID-19 patients is crucial for effective treatment and requires a high level of suspicion from both general and emergency physicians.