Scientific Work of Paul Gerson Unna

Paul Gerson Unna (1850–1929) – Genius of all times

“…During this time, he published his first book "Histopathology of Skin Diseases" (Histopathologie der Hautkrankheiten), which is considered until today as one of the most fundamental works in dermatology. [2] He detailed the entire dermatology at that time, described all known skin diseases and put forward new therapies. The chapter on "Nevi" is hailed to be a classic even today.…”

“…[3] Many inventions described in the journal are still being used, which include cignolin (dithranol/anthralin) for psoriasis, leukoplast plaster (zinc oxide tape) for fixation of dressings, and eucerin, known worldwide today as "Nivea crème. " [2] The introduction of ichthyol and resorcinol in 1886 to treat skin diseases was a major innovation. [3] He was the first to describe stratum granulosum, investigated the biochemical processes of the skin, and initiated layer projection as a method for skin investigations.…”

“…[1] In 1891, Unna together with Henri Leloir of France, Malcolm Morris of England, and Louis Duhring of the United States, prepared the International Atlas of Rare Skin Diseases, which helped not only the students but teachers as well, to a great degree. [2,4] In 1907, the title of Professor was conferred on him by the Hamburg senate. One year later, he became the chief physician of the Eppendorf hospital.…”