title: An acne free naevus.
mesh_terms: D000152:Acne Vulgaris / Q000150:complications* / Q000378:metabolism; D006801:Humans; D009506:Nevus / Q000150:complications* / Q000378:metabolism; D012867:Skin / Q000378:metabolism; D013739:Testosterone / Q000378:metabolism
chemical_list: D013739:Testosterone