HX31 Affection or ambition? The life and legacy of Moritz Kaposi

Abstract Born to a Jewish family in Hungary, Moritz Kohn adopted the name Moritz Kaposi when he converted to the Catholic faith. He began studying medicine in the University of Vienna under the guidance of Ferdinand Ritter von Hebra, often regarded as the German ‘founding father of dermatology’. After earning his doctorate in 1861, his dissertation in 1866, entitled ‘Dermatologie und Syphilis’ gained him widespread recognition and established his reputation in the field. Kaposi’s marriage to Hebra’s daughter, Martha, fuelled speculation about his personal motives. Some questioned the authenticity of the union and felt it was a strategic move to secure social advancement, given his Jewish heritage. Professional jealousy rose, with William Dubreuilh (first professor and chairman of dermatology in Bordeaux) remarking ‘It was said of Kaposi that he had taken the daughter of Hebra, his home, his chair and his clientele’. Despite social scrutiny, Kaposi continued to rise in prominence, making some of the most significant contributions to the diagnosis of skin disease. Kaposi’s most famous discovery is his eponymous Kaposi sarcoma. This skin cancer was first described in 1872 and was initially named ‘idiopathic multiple pigmented sarcoma’. The condition gained renewed significance over a century later during the HIV epidemic. Today, the rash associated with Kaposi sarcoma is one of the diagnostic markers of AIDS and remains the most common malignant complication of the disease. A prolific writer, Kaposi authored over 100 articles, contributing extensively to the field. In 1878, Kaposi collaborated with his mentor, Hebra, to publish the Textbook of Skin Diseases.’ His second publication, Pathology and Therapy of the Skin Diseases in Lectures for Practical Physicians and Students, was translated into several languages, becoming one of the most influential texts in the history of dermatology. Notably, he coined the term ‘xeroderma pigmentosum’, describing the rare genetic disorder. He was also among the first dermatologists to characterize lupus erythematosus, dermatitis herpetiformis, varicelliform eruptions and lichen scrofulosorum. Moritz Kaposi died in 1902. His groundbreaking work and vast body of research have had a lasting impact on the diagnosis and treatment of various skin conditions. This eminent dermatologist’s legacy continues to inspire and guide future generations of dermatologists.