A 62-year-old man presented with a 2-year history of an annular lesion encircling the anterior aspect of his chest and neck in a necklace distribution. He had received no prior treatment of this lesion and denied trauma to the region. His medical history was remarkable for the excision of a melanoma from both the right submandibular area (Clark level II) and the right temple (Clark level IV), hypertension, proteinuria, degenerative joint disease, gastroesophageal reflux disease, tobacco and alcohol abuse, and hypercholesterolemia.
Meadows KP, O'Reilly MA, Harris RM, Petersen MJ. Erythematous Annular Plaques in a Necklace Distribution. Arch Dermatol. 2001;137(12):1647-1652. doi: