title: Hyperpigmentation problems: effectiveness and rationale of therapy.
mesh_terms: D003452:Cryosurgery; D004564:Electrocoagulation; D006801:Humans; D006854:Hydrocortisone / Q000627:therapeutic use; D006873:Hydroquinones / Q000627:therapeutic use; D010636:Phenols / Q000627:therapeutic use; D010859:Pigmentation Disorders / Q000473:pathology / Q000601:surgery / Q000628:therapy*
chemical_list: D006873:Hydroquinones; D010636:Phenols; D006854:Hydrocortisone