Rudolf Gottfried Arndt (31 March 1835 – 29 January 1900) was a German psychiatrist from Bialken, district of Marienwerder.
Biography Arndt studied in Greifswald and Halle. As a student, his instructors included Felix von Niemeyer (1820–1871), Heinrich Adolf von Bardeleben (1819–1895), and Heinrich Philipp August Damerow (1798–1866).Pagel: Biographical Dictionary outstanding physicians of the nineteenth century. Berlin, Vienna, 1901, 44-45 Sp. (biography) He was conferred doctor of medicine on 20 February 1860. From 1861 he maintained a private practice, and also participated in the Second Schleswig War (1864), Austro-Prussian War (1866) and Franco-Prussian War (1870–71).
In 1867 he obtained his habilitation, subsequently serving as director of the Irren-Heil- und Pflege-Anstalt in Greifswald. In 1873 he became an associate professor of psychiatry at Greifswald.NDB/ADB Deutsche Biographie (biography) He died of angina pectoris.Rudolf Arndt @ Who Named It
He is known today for the "Arndt-Schulz rule", a pharmacologic principle of homeopathy that is named in conjunction with German chemist Hugo Schulz (1853-1932).Medical Dictionary Arndt-Schulz rule He is also remembered for his investigations of neurasthenia.Google Books Diseases of the Nervous System by Archibald ChurchMan and Woman: Study of Human Secondary Sexual Characters by Havelock Ellis
Awards and decorations Order of the Crown, 4th class with Swords (Prussia, 1866) Iron Cross of 1870, 2nd class on white-black band (Prussia, 1871) Knight's Cross, First Class of the Order of the Zähringer Lion (Baden)
Selected writings Aus einem apoplectischen Gehirn, 1878 - On the apoplectic brain. Die Neurasthenie (Nervenschwäche), ihr Wesen, ihre Bedeutung und Behandlung, 1885 - Neurasthenia (nerve weakness), its nature, its meaning and treatment. Der Verlauf der Psychosen, 1887 (with August Dohm) - The course of psychosis. Was sind Geisteskrankheiten?, 1897 - What is mental illness? IDREF.fr (bibliography)
See also Arndt-Schulz rule
References