=====Mental Illness=====
"[[Psychosis]]" is a term used in '''[[psychiatry|clinical psychiatry]]''' to refer to a severe form of '''mental illness''' in general.
The term "[[psychosis]]" was first used in '''[[psychiatry|clinical psychiatry]]''' to refer to '''mental illness''' in general.
The term "[[psychosis]]" arose in '''[[psychiatry]]''' in the nineteenth century as a way of designating '''[[treatment|mental illness]]''' in general.
=====Sigmund Freud=====
=====Psychosis and Neurosis=====
During [[Freud]]'s life, a basic distinction between [[psychosis]] and '''[[neurosis]]''' came to be generally accepted, according to which [[psychosis]] designated extreme forms of [[treatment|mental illness]] and '''[[neurosis]]''' denoted less serious disorders.
This basic distinction between [[neurosis]] and [[psychosis]] was taken up and developed by [[Freud]] himself in several papers.<ref>{{F}} "[[Works of Sigmund Freud|Neurosis and Psychosis]]." [[SE]] XIX. 1924b: 149</ref>
=====Jacques Lacan=====
