Halo Nevus or Mole: Symptoms, Causes, Diagnosis, and Treatment Figure 5 from Changes of melanocytic lesions inducedby Melanotan injections and sun bed use ina teenage patient with FAMMM syndrome Semantic Scholar 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 Types of Moles and Skin Lesions AIM at Melanoma Foundation