The evolution of Lacan’s theory of the body in psychosis is presented, starting from his seminar on the sinthome. Some points of rupture can be found retrospectively in Lacan’s theory. From his first conceptualization of the imaginary body, then of the symbolic body and finally of the real body, Lacan comes to the conclusion that the imaginary, the symbolic and the real must be knotted. Lacan’s latest teaching offers novel perspectives on the difficult relation between body, language and jouissance for every speaking being. This is illustrated by means of three short case studies about James Joyce, Antonin Artaud and Michel H.