Karl Wilhelm Ideler (25 October 1795 – 29 July 1860) was a German psychiatrist. He was born in Bentwisch and died in Kumlosen near Wittenberge.
In 1820 he earned his doctorate from the Friedrich Wilhelm Institute in Berlin, and spent the next several years as a general practitioner in the cities of Bernau, Rathenow and Genthin. In 1828 he returned to Berlin as head of the department for mental illness at the Charité. In 1840 he became a full professor and director of the psychiatric clinic. From 1839 until his death in 1860, he taught classes at the University of Berlin. His uncle was noted astronomer Christian Ludwig Ideler (1766–1846).[1]
Ideler was one of the more prominent figures in regards to German psychiatric thought during the first half of the 19th century. This era is often described as the German "romantic" school of psychiatry. In his numerous publications, Ideler theorized on issues such as mind–body correlations, religious mania and religious confusion. Ideler introduced complex theories on the relationship between illnesses of the mind and the state of the physical body.
During his time period, conditions at the Charité for mentally ill patients were often considered barbaric and inhumane. Ideler, not averse to punitive measures, made little effort to change these conditions. Later on, Wilhelm Griesinger (1817–1868) would advocate significant changes towards humane and dignified treatment of the mentally ill at the Charité. Although Ideler is often portrayed as a product of an unenlightened era in psychiatric thought, he had several ideas that are consistent with modern psychoanalysis. He stressed the importance of the emotional life, and believed that unfulfilled passions could be a source of mental disturbance. He considered passion to be a form of mental disturbance, and that the physician needed to analyze the passion that provoked the mental imbalance.