Atypical Moles (Dysplastic Nevus; Atypical Nevus) By Denise M Aaron, MD, Dartmouth Geisel School of Medicine Reviewed / Revised Jan 2022 | Modified Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Prevention Key Points Topic Resources Atypical Nevus Multiple Atypical Nevi Atypical Mole Characteristics of Atypical... Atypical moles are benign melanocytic nevi with irregular and ill-defined borders, variegated colors usually of brown and tan tones, and macular or papular components.