COVID-19-Vaccination-Induced Localized Lichen Planus Successfully Treated With Phototherapy.

Lichen planus (LP) is an inflammatory autoimmune mucocutaneous disease with different forms and presentations. It mainly affects the skin and oral mucosa but could also affect genital mucosa, nails, hair, and, rarely, the larynx and esophagus. Since the start of the COVID-19 era, multiple cutaneous manifestations related to SARS-CoV-2 infection or vaccination have been reported. Different rare cases of lichen planus were reported after COVID-19 infection and vaccination. This report elaborates on and adds an additional case of localized cutaneous lichen planus (CLP) to the upper extremities, which developed after both doses of the mRNA vaccine and improved after phototherapy.