Unna, paul gerson

(¤ 1850, † 1929) Born in Hamburg in 1850 as the son of a general practitioner. Studied medicine in Heidelberg from 1870. Doctorate under Waldeyer in 1875. Until 1884, various positions, including with his father in Hamburg. 1882 Founds the "Monatshefte für praktische Dermatologie" together with O. Lassar and F. Hebra. 1881 Founds his own dermatology clinic. 1887 First description and clinical differentiation of seborrhoeic eczema. 1890 First description of parakeratosis variegata, clear clinical differentiation from other diseases of the parapsoriasis group. 1889 Together with Taenzer, first description of Ulerythema ophryogenes. 1890 Together with Pollitzer and Janovsky, first description of acanthosis nigricans. Together with Beiersdorf and Troplowitz, Unna introduced ichthyol into the treatment of skin diseases. This working group also gave rise to ^Nivea® cream, which is still on the market today.

In 1907, the city of Hamburg awarded him the title of professor. 1919 dermatology professorship at the newly founded University of Hamburg.