(¤ 1842, † 1919) French dermatologist. François Henri Hallopeau studied medicine in Paris under Edmé Félix Alfred Vulpian (1826-1887) and Sigismond Jaccoud (1830-1913). In 1863 he became an extern of the Hôpitaux de Paris, and in 1866 an intern. He received his doctorate in 1871 and became médecin of the Hôpitaux de Paris in 1877, and professor agrégé of the faculty in 1878.
Hallopeau was chief physician at the Hôpital Tenon from 1880 and at the Hôpital Saint-Antoine from 1881 to 1883. From 1884 he was employed as a physician at the Hôpital St. Louis, initially as a neurologist. He eventually gave up this activity to devote himself exclusively to dermatology. From 1893, he was a member of the Académie de Médecine and Secretary General of the Société Française de dermatologie et de syphiligraphie, of which he had been a co-founder in 1890.
Hallopeau was a member of numerous French societies. He was a delegate to the Berlin Leprosy Conference in 1899. In 1902 he competed with Philippe Charles Ernest Gaucher (1854-1918) for the chair of dermatology and syphilography vacated by Jean Alfred Fournier (1832-1914), but lost by a one-vote margin. He retired in 1907.
Field(s) of research and first descriptions: Hallopeau-Siemens syndrome (epidermolysis bullosa hereditaria dystrophica sive dysplastica); acrodermatitis continua suppurativa; 1887 first description of lichen sclerosus et atrophicus; 1889 first description of pemphigus vegetans type Hallopeau as pyodermite végétante. 1900 together with Emile Leredde first edition of the textbook: "Practical Dermatology". The term trichotillomania was coined by him in 1889.