Herpes vegetans on the shoulder mimicking nonmelanoma skin cancer.

Atypical morphologic and anatomic presentations of herpetic infection can be a diagnostic and therapeutic challenge. Although herpes simplex virus type 2 (HSV-2) infections primarily occur in the oral or anogenital region, our patient presented with ulcerated vegetative plaques on the shoulder sharing clinical features with nonmelanoma skin cancer (NMSC). Depending on the clinical appearance and anatomical site, proper workup including biopsy can be pivotal to arrive at a correct diagnosis as lesions can mimic a broad spectrum of cutaneous diseases, particularly if the lesion occurs in an atypical location. Dermatology providers should include HSV-2 in the differential diagnosis when challenged with unusual ulcerated or verrucous lesions.