Introduction The COVID-19 is a global pandemic that is now responsible for more than 3 million deaths around the world. The oral and dermatological manifestations of COVID-19 are being remarkably reported. This report aims to describe a unique case of oral presentation of erosive lichen planus after COVID-19 infection. Case presentation We present a case of oral lichen planus manifested in the buccal mucosa and the tongue. The lesions were detected one month after COVID-19 infection. Clinical, as well as the histopathological diagnosis, was performed on the oral lesion to confirm oral lichen planus. Clinical discussion Despite viruses being reported as a triggering factor in oral lichen planus, very few cases of oral lichen planus after COVID-19 infection were noticed. The immunological and psychological changes induced by COVID-19 infection may explain the tendency to find lichen planus lesions in COVID-19 patients. Conclusion Our case suggests the possible association between COVID-19 and oral lichen planus. This report highlights the role of health practitioners to be concerned about the probably rising incidence of lichen planus during the COVID-19 pandemic and consider appropriate therapeutic and protective measures against infection. Highlights • Coronavirus disease 2019 (Covid 19) causes pandemics all over the world. • Oral and cutaneous manifestations of COVID-19 are emerging every day. • Lichen planus is a new pattern of COVID‐19 associated lesion. • Identification and diagnosis of lichen planus after COVID-19 need conducting entire clinical and laboratory investigation.
【저자키워드】 COVID-19, Lichen planus, oral mucosa, 【초록키워드】 Coronavirus disease 2019, COVID-19 pandemic, Infection, Diagnosis, virus, COVID‐19, global pandemic, Health, COVID-19 infection, clinical, therapeutic, death, Pandemics, oral, Psychological, incidence, change, tongue, COVID-19 patients, Protective, association, manifestation, cutaneous manifestation, identification, mucosa, lesion, measure, laboratory investigation, Practitioner, immunological, highlight, responsible, reported, was performed, unique, cause, histopathological, manifested, explain, rising, triggering factor, 【제목키워드】 Case report, oral lichen planus,