title: Henri Hallopeau (1842-1919).
mesh_terms: D000052:Acanthosis Nigricans / Q000266:history; D000169:Acrodermatitis / Q000266:history; D001474:Bartonella Infections / Q000266:history; D003872:Dermatitis / Q000266:history; D003880:Dermatology / Q000266:history; D005602:France; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008010:Lichen Planus / Q000266:history; D012871:Skin Diseases / Q000266:history*