Iatrogenesis is the causation of a disease, a harmful complication, or other ill effect by any medical activity, including diagnosis, intervention, error, or negligence. First used in this sense in 1924, the term was introduced to sociology in 1976 by Ivan Illich, alleging that industrialized societies impair quality of life by overmedicalizing life. Iatrogenesis may thus include mental suffering via medical beliefs or a practitioner's statements. Some iatrogenic events are obvious, like amputation of the wrong limb, whereas others, like drug interactions, can evade recognition. In a 2013 estimate, about 20 million negative effects from treatment had occurred globally. In 2013, an estimated 142,000 persons died from adverse effects of medical treatment, up from an estimated 94,000 in 1990.
Ancient Greek painting in a vase, showing a physician (iatros) bleeding a patient
Ivan Dominic Illich was an Austrian Roman Catholic priest, theologian, philosopher, and social critic. His 1971 book Deschooling Society criticises modern society's institutional approach to education, an approach that constrains learning to narrow situations in a fairly short period of the human lifespan. His 1975 book Medical Nemesis, importing to the sociology of medicine the concept of medical harm, argues that industrialised society widely impairs quality of life by overmedicalising life, pathologizing normal conditions, creating false dependency, and limiting other more healthful solutions. Illich called himself "an errant pilgrim."
Ivan Illich