Josef Jadassohn


Joseph Jadassohn was a German dermatologist.

Biography

He was an assistant to Albert Neisser at the Allerheiligen Hospital in Breslau until 1892, the director of the university skin clinic in Bern, and later a professor of dermatology at Breslau University.
Jadassohn was among the first to take an immunological approach in research of dermatological disorders, and contributed to the understanding of the immunopathology of tuberculosis and trichophytosis. He was a pioneer in the field of allergology, and is credited for introducing patch testing for diagnosis of contact dermatitis. In 1901 he described a rare childhood dermatological disorder known as granulosis rubra nasi.

Conditions

Two dermatological disorders that are named after him are: "Jadassohn's disease I" and "Jadassohn's disease II". Together with his assistants, Walter Dössekker, Max Tièche, and Felix Lewandowsky, he shares the following eponymous medical conditions:
Jadassohn published a revision of Edmund Lesser’s Lehrbuch der Haut- und Geschlechtskrankheiten, and from 1927 published the multi-volume Handbuch für Haut- und Geschlechtskrankheiten. Other noted written works of his include: