Wilhelm Fliess

Wilhelm Fliess was a German otolaryngologist who practised in Berlin and lived from 1858 to 1928. He developed the pseudoscientific theory of human biorhythms and proposed a possible nasogenital connection, ideas that modern scientists have not accepted. He is best remembered today for his close friendship and theoretical collaboration with Sigmund Freud, a controversial chapter in the history of psychoanalysis. Born on 24 October 1858 and dying on 13 October 1928, he practised as an ear, nose and throat physician, and the scientific community regards his biorhythm and nasogenital claims as pseudoscience rather than established medicine.