Acanthosis nigricans.
D000052:Acanthosis Nigricans / Q000175:diagnosis / Q000188:drug therapy / Q000662:veterinary*; D000818:Animals; D003879:Dermatologic Agents / Q000627:therapeutic use; D003937:Diagnosis, Differential; D004283:Dog Diseases / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*; D004285:Dogs; D004700:Endocrine System Diseases / Q000175:diagnosis / Q000662:veterinary; D008550:Melatonin / Q000008:administration & dosage
D003879:Dermatologic Agents; D008550:Melatonin