Successful Treatment of Severe Nail Lichen Planus with Janus Kinase 1 Inhibitor Abrocitinib.

Nail lichen planus (NLP) is a chronic inflammatory disease that presents a significant therapeutic challenge. It can progress rapidly, leading to impaired nail morphology and function. Currently, there is no established standard therapy due to limited efficacy or potential for significant adverse reactions. In this report, we present a case of very severe NLP successfully treated with the Janus kinase 1 (JAK1) inhibitor abrocitinib, with no associated discomfort.