Born 15 Feb 1856; died 7 Oct 1926 at age 70.

German #psychiatrist, one of the most influential of his time, who developed a classification system for mental illness that influenced subsequent classifications. Kraepelin made distinctions between #schizophrenia and #manic-depressive #psychosis that remain valid today. Kraepelin employed Wundt's experimental techniques to study the effects of #drugs, #alcohol, and #fatigue on psychological functioning and in 1881 published a study of the influence of infectious diseases on the onset of mental illness. In his first classification of disorders (1883) Kraepelin divided mental illnesses into #exogenous #disorders (treatable, caused by external conditions) and #endogenous disorders (untreatable, from biological causes such as organic brain damage or hereditary factors).