Daniel Danielssen. Portrait of Daniel Cornelius Danielssen (1815-94), Norwegian physician and leprosy pioneer. Danielssen worked in the Leprosy Hospit

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Daniel Danielssen. Portrait of Daniel Cornelius Danielssen (1815-94), Norwegian physician and leprosy pioneer. Danielssen worked in the Leprosy Hospital in Bergen, Norway. His book on leprosy in 1847 was a major advance in defining the disease. With Boeck, Danielssen made Bergen the dominant European centre for leprosy research. Erroneously, he always regarded leprosy as a hereditary disease. Leprosy is caused by a bacillus, Mycobacterium leprae, which is similar to the tuberculosis bacteria. The disease causes damage to nerves and a loss of sensation. This allows injuries to go unnoticed and the patient can become disfigured due to secondary infections.

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Keywords: .., cornelius, daniel, danielssen, disease, hansens, leprae, leprosy, mycobacterium, physician, pioneer, portraits, surname