Related Experiment Video
Updated: Jul 18, 2026

Granulocyte-dependent Autoantibody-induced Skin Blistering
Published on: October 12, 2012
Mask-induced Koebner Phenomenon in Pemphigus Patients During COVID-19 Pandemic
Ilayda Esna Gulsunay1, Yasemin Erdem2, Ilknur Kivanc Altunay1
1Department of Dermatology, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye.
Abstract:
Koebner phenomenon of skin diseases due to face masks have been reported since COVID-19 pandemic, especially in psoriasis patients. Although there are reports on Koebner phenomenon in pemphigus patients in the literature, pemphigus lesions triggered by face masks have not been described previously. Herein, we report one case of pemphigus vulgaris and one case of pemphigus vegetans with new and persistent lesions on the nose following prolonged use of face masks. Both cases had persistent pemphigus lesions on their noses where face masks irritated the most. The development of lesions after the use of masks and the persistence of nasal lesions despite the improvement of other skin lesions with the treatment in both cases, suggested that minor traumas due to the use of masks played a role in the formation of lesions.
More Related Videos
09:03Nasal Brushing Sampling and Processing Using Digital High Speed Ciliary Videomicroscopy – Adaptation for the COVID-19 Pandemic
Published on: November 7, 2020
06:29Comparing Objective Conjunctival Hyperemia Grading and the Ocular Surface Disease Index Score in Dry Eye Syndrome During COVID-19
Published on: May 25, 2022
Related Concept Videos
PPE Use in Healthcare Settings I: Donning
PPE Use in Healthcare Settings II: Doffing
Smallpox
Chickenpox
Coronavirus