Acanthosis nigricans: A practical approach to evaluation and management Steven P Higgins MD 1, Michael Freemark MD 2, Neil S Prose MD 3 Dermatology Online Journal 14 (9): 2 1. Division of Dermatology, Department of Internal Medicine, Duke University Medical Center, Durham, North Carolina. steven.higgins@alumni.duke.edu 2. Division of Endocrinology and Diabetes, Department of Pediatrics, DUMC ....