French dermatologist who provided early, comprehensive descriptions of numerous skin disorders, including keratosis pilaris, parapsoriasis and a form of dermatitis called “Duhring-Brocq disease” (named with Louis Adolphus Duhring and sometimes referred to as dermatitis herpetiformis). Other eponymous skin diseases named after him are “Brocq’s pseudopelade”, a condition involving progressive scarring of the scalp, and “Brocq-Pautrier angiolupoid”, a specific type of sarcoidosis of the skin named in conjunction with Dr. Lucien-Marie Pautrier (1876–1959). With Pautrier he also described “Brocq-Pautrier syndrome” (glossitis rhombica mediana), characterized by rhomboid and shiny lesions on the midline of base of the tongue. Brocq is also credited for developing a tar solution used for the treatment of psoriasis.
He practised medicine in Paris at the Hospice la Rochefoucauld, the Hôpital Broca, and from 1906 to 1921, the Hôpital Saint-Louis. As a young physician he studied and worked with Jean Alfred Fournier (1832–1915), Jean Baptiste Emile Vidal (1825–1893) and Ernest Henri Besnier (1831–1909). Along with Ernest Besnier and Lucien Jacquet, he published a four volume encyclopedia of dermatology, titled “La pratique dermatologigue” (1900–1904).
He died on 18 December 1928, aged 72, in Paris.
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