Eaux thermales et thermalisme en dermatologie au xixe siècle: Thermal water and hydrotherapy in xixth century dermatology.

Jean-Louis Alibert (1768-1837), Pierre-Alphée Cazenave (1802-1877) and Ferdinand von Hebra (1846-1880) are among the most famous names of the XIXth century dermatology. All were interested in hydrotherapy and mineral waters. Alibert was especially fond of sulfurous waters from the Pyrenees, for treating almost every inflammatory disease, like psoriasis, chronic eczema and even hair diseases or cheloids. He mentioned very often the use of mineral waters in his two masterpieces, Description des Maladies de la peau (1806) and Clinique de l'Hôpital Saint-Louis (1833). In case patients were not able to travel and spend times at thermal stations, he recommended artificial waters made by pharmacists in specialized places in Paris, consisting in water plus minerals, in order to obtain a composition close to natural spring waters. Around 1850, Cazenave also used mineral waters and hydrotherapy, mainly sulfurous waters. In Vienna, von Hebra was more reluctant to the use of mineral water, as he believed that the time spent in baths was more important than the composition of the water itself. Adrien Doyon (1827-1907), who translated Hebra's book in French, strongly disagreed with him, as he had a dermatology private practice in Uriage, in the French Alps. Modern hydrotherapy in dermatology is clearly in relation with this XIXth century tradition. © 2020 Elsevier Masson SAS. All rights reserved.

Dermatite atopíque : images hístoriques: Historical images of atopic dermatitis.

Atopic dermatitis has been described under many names before the XXth century, and first illustrated in the early XIXth century. This article presents historical images from the first volumes of Robert Willan to the Pratique dermatologique, the first encyclopedy published in 1900. Many accurate clinical descriptions of the disease can be found in the early treaties of dermatology, including the one published by Thomas Carrere in 1740. Since then, Alibert and Rayer in France, Hebra and Neumann in Vienna and Duhring and Fox in the USA illustrated their atlases with spectacular images of adults or children suffering from AD, or from other diseases that might have been considered as eczema infantile. Color engravings, color lithographs and black and white photographs showed with an increasing precision the semiology of AD, in the context of artistic representations of high quality, that have not been surpassed by modern photographs. At the beginning of the XXth century the clinical presentation, the course and heredity of the disease were perfectly established, introducing a new era of research in physiopathology and treatment in the following decades.

[Dermatosurgery and other interventional techniques in dermatology: a more than 2000 year-history]. / La dermatologie instrumentale avant la « dermatochirurgie ¼, plus de 2 000 ans d'histoire.

Surgical dermatology has probably existed since the first steps of antique medicine, especially for cutaneous cancer excision and wound reparation. Wonderful descriptions of surgical flaps can be found in the Encyclopedy of Celse, a Roman doctor living in the first century AC. Major progresses in local anesthesy were achieved at the end of the XIXth century, allowing the first dermatologists of the XXth century to perform biopsies and cutaneous surgery with a good control of patient's pain. Electricity was introduced in medicine at the end of the XIXth century, and our ancestors dermatologists used it for electrocoagulation, cauterization and electric hair removal. In the « Pratique dermatologique ¼, the first encyclopedy of dermatology published in 1900, many chapters show how important instrumental and surgical dermatology was. Pigmentary changes induced by surgery and other procedures were probably well known then but were less important than troubles due to scarring, which are mentioned in the early literature. Spontaneous or post-interventional cheloids are well discussed in the early works of Alibert, in the years 1810. This article shows that surgical dermatology is far more ancient than the creation of societies dedicated to it in the XXth century.

[Between 100 and 200 years before the microbiome ]. / Cent à deux cents ans avant le microbiome

Before the era of microbiote, our ancestors patiently discovered, described and cultivated pathogens, including those responsible for dermatoses. The very well known ectoparasites were represented in the earliest books on cutaneous diseases at the end of XVIII(th) century and the first half of the XIX(th) century. Fungi were discovered in the 1840s, rapidly followed by numerous bacteria, including those causing tuberculosis and lepra. This article is illustrated by images that often showed for the first time parasites and bacteria in books dedicated to cutaneous diseases. Engravings and photographs from the books of Willan, Rayer and Hardy show accurate images of pathogens. Microscopic images can also be found in the textbooks of Simon, Leloir, Sabouraud, Unna and many others. Darier himself believed that "Darier's disease" was due to a parasite, which explains why he named his disease "Vegetant follicular psorospermosis".