Ernst Viktor von Leyden

Ernst Viktor von Leyden (April 20, 1832 - October 5, 1910) was a German internist and educator. Leyden studied medicine at the Friedrich-Wilhelms-Institut in Berlin, and was a pupil of Johann Lukas Schönlein (1793-1864) and Ludwig Traube (1818-1876). He practiced medicine in several locations including Königsberg, Strassburg and Berlin. In the 1890s, he was a physician to Czar Alexander III of Russia.

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Leyden specialized in neurological diseases, and was a leader in establishing proper hospital facilities for tuberculosis patients. He published many articles on a wide array of medical topics, especially tabes dorsalis and poliomyelitis. In 1899 he published a two-volume Handbuch der Ernährungstherapie .

Eponymous medical terms named for Ernst von Leyden
Charcot-Leyden crystals: colorless crystals found in the sputum of asthma patients, or in the faecal matter of amoebic and ulcerative colitis; named along with neurologist Jean-Martin Charcot.
Leyden's neuritis: A neuritis in which nerve fibres are replaced by fatty tissue.
Leyden's paralysis II: A fatal form of paralysis of the extremities that follows epileptiform seizures; seen in patients with hemorrhage of the pons and medulla oblongata.
Leyden-Möbius syndrome: Pelvic muscular dystrophy; named along with neurologist Paul Julius Möbius.
Westphal-Leyden ataxia: Acute ataxia that begins in childhood; named along with neurologist Karl Friedrich Otto Westphal.