Does a Discolored Mole Always Mean Melanoma?: Manhattan Dermatology: General, Surgical, & Cosmetic Dermatology Halo Nevus or Mole: Symptoms, Causes, Diagnosis, and Treatment Melanotan is not a tan. It's an unregulated peptide with real risk. As a dermatologist, here's the reality: It has been linked to new and changing moles including cases of Benign mole (melanocytic naevi) MySkinDoctor Types of Moles and Skin Lesions AIM at Melanoma Foundation