Acanthosis nigricans is prevalent in the general population and is the most common dermatological manifestation of obesity. It is typically observed in the flexural areas such as the neck, axillae, and groin. Herein we report an interesting case of extensive acanthosis nigricans involving the neck, axillae, groin, and, uncommonly, the sulci of both auricles in an otherwise healthy but obese 23-year-old patient.
Keywords: Acanthosis nigricans; Auricle; Obesity; Pinna.