Louis-Anne-Jean Brocq
Encyclopedia
Louis-Anne-Jean Brocq was a French dermatologist who was born in Laroque-Timbaut
Laroque-Timbaut
Laroque-Timbaut is a commune in the Lot-et-Garonne department in south-western France....

, a village in the department of Lot-et-Garonne
Lot-et-Garonne
Lot-et-Garonne is a department in the southwest of France named after the Lot and Garonne rivers.-History:Lot-et-Garonne is one of the original 83 departments created during the French Revolution on March 4, 1790...

. He practiced medicine in Paris
Paris
Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

 at the Hospice la Rochefoucauld, the Hôpital Broca, and from 1906 to 1921, the Hôpital Saint-Louis
Hôpital Saint-Louis
Hôpital Saint-Louis is a hospital in Paris, France. It is part of the Assistance publique - Hôpitaux de Paris hospital system, and it is located at 1 avenue Claude-Vellefaux, in the 10th arrondissement, near the metro station: Goncourt.-External links:*...

. As a young physician he studied and worked with Jean Alfred Fournier
Jean Alfred Fournier
Jean Alfred Fournier was a French dermatologist who specialized in the study of venereal diseases.As a young man he served as an interne at the Hôpital du Midi as an understudy to Philippe Ricord . In 1863 he became médecine des hôpitaux, and from 1867 worked with Augustin Grisolle at the...

 (1832-1915), Jean Baptiste Emile Vidal
Jean Baptiste Emile Vidal
Jean Baptiste Emile Vidal was a French dermatologist who was a native of Paris. He studied medicine in Tours and Paris, becoming médecin des hôpitaux in 1862. For much of his career he was associated with the Hôpital Saint-Louis in Paris...

 (1825-1893) and Ernest Henri Besnier
Ernest Henri Besnier
Ernest Henri Besnier was a French dermatologist and medicinal director of the Hôpital Saint-Louis in Paris. He was a native of Honfleur, département Calvados....

 (1831-1909).

Brocq provided early, comprehensive descriptions of numerous skin disorders, including keratosis pilaris
Keratosis pilaris
Keratosis pilaris is a common, autosomal dominant, genetic follicular condition that is manifested by the appearance of rough bumps on the skin...

, parapsoriasis
Parapsoriasis
Parapsoriasis refers to one of a group of skin disorders that are characterized primarily by their resemblance to psoriasis , rather than by their underlying etiology.Neoplasms can develop from parapsoriasis...

 and a form of dermatitis
Dermatitis
-Etymology:Dermatitis derives from Greek derma "skin" + -itis "inflammation" and genetic disorder.-Terminology:There are several different types of dermatitis. The different kinds usually have in common an allergic reaction to specific allergens. The term may describe eczema, which is also called...

 called "Duhring-Brocq disease" (named with Louis Adolphus Duhring
Louis Adolphus Duhring
Louis Adolphus Duhring was an American physician and professor of dermatology at the University of Pennsylvania....

), which is also referred to as dermatitis herpetiformis
Dermatitis herpetiformis
Dermatitis herpetiformis , or Duhring's disease,Freedberg, et al. . Fitzpatrick's Dermatology in General Medicine. . McGraw-Hill. ISBN 0-07-138076-0. is a chronic blistering skin condition, characterised by blisters filled with a watery fluid...

. Other eponymous skin diseases named after him are "Brocq's pseudopelade
Pseudopelade of Brocq
Pseudopelade of Brocq is a flesh- to pink-colored, irregularly shaped alopecia that may begin in a moth-eaten pattern with eventual coalescence into larger patches of alopecia.-See also:* Cicatricial alopecia...

", which involves progressive scarring of the scalp, and "Brocq-Pautrier angiolupoid", a specific type of sarcoidosis
Sarcoidosis
Sarcoidosis , also called sarcoid, Besnier-Boeck disease or Besnier-Boeck-Schaumann disease, is a disease in which abnormal collections of chronic inflammatory cells form as nodules in multiple organs. The cause of sarcoidosis is unknown...

 of the skin that is named in conjunction with Dr. Lucien-Marie Pautrier (1876-1959). Brocq is also credited for developing a tar solution used for the treatment of psoriasis
Psoriasis
Psoriasis is an autoimmune disease that appears on the skin. It occurs when the immune system mistakes the skin cells as a pathogen, and sends out faulty signals that speed up the growth cycle of skin cells. Psoriasis is not contagious. However, psoriasis has been linked to an increased risk of...

.

In 1900, Brocq published the first French encyclopedia of dermatology; a four-volume treatise named Pratique Dermatologigue.
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