Isolated angioedema due to face mask and other cases of isolated angioedema

Abstract

Abstract Isolated angioedema can be divided into two groups as mast cell–mediated angioedema and bradykinin-mediated angioedema according to the known mechanisms of occurrence. However, angioedema can also occur with mechanisms whose cause is unknown. Treatment varies according to the mechanism of angioedema formation. In this prospective study, we present the causes of 80 isolated angioedema cases admitted to our clinic during the pandemic period. We would like to emphasize the causes that we found in our cases but which are rare in the literature. For example: angioedema due to allergy to nickel in the mask used during the pandemic period, T cell–mediated angioedema, alpha adrenergic receptor blocker use, and patients diagnosed with collagen tissue disease presenting with angioedema as the first clinical finding.