Picture of Becker's Nevus
Becker's nevus is a sharply demarcated tan to brown patch or slightly raised verrucous plaque that most commonly appears on the shoulder, chest, or upper back. It typically presents unilaterally and is frequently associated with overlying hypertrichosis. It is a benign hamartoma.
Text Source: Color Atlas of Cosmetic Dermatology Marc R. Avram, Sandy Tsao, Zeina Tannous, Mathew M. Avram Copyright 2011 by The McGraw-Hill Companies, Inc. All rights reserved.