• Curtis Perz, Jay Chittoor, and Liesel Grenier.
• Philadelphia College of Osteopathic Medicine, Philadelphia, PA 19131, USA.
• Mil Med. 2025 Jan 29.

AbstractAnnular atrophic lichen planus (AALP) is a chronic subtype of lichen planus that classically does not respond to treatment with topical steroids. An inflammatory reaction in the dermal infiltrate may play a role in the development of AALP, but the exact pathogenesis remains unclear. We present the case of a 54-year-old-female with lesions on her trunk and extremities that developed following vaccination. Her failed treatment response warranted further workup for AALP, which was confirmed around 1 year after initiation. Although vaccine-induced lichen planus is not common, it has been reported in various cases. We present a rare case of AALP following vaccination and then provide an in-depth discussion of factors associated with the condition and current treatment response.Published by Oxford University Press on behalf of the Association of Military Surgeons of the United States 2025. This work is written by (a) US Government employee(s) and is in the public domain in the US.

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