In an article of 1920 entitled Die Erscheinungsformen des Irreseins, published in Kraepelin's phase of theoretical maturity, this great German scholar presented a re-reading of his thinking on psychopathology, considering that clinical manifestations of mental diseases are never direct expressions of underlying pathogenic processes. Manifestations depend on a complex interaction with the subject in his or her history during which changes have been installed and inscribed.Dans l'article de 1920, intitule Die Erscheinungsformen des Irreseins, publié à la maturité théorique de Kraepelin, le grand auteur allemand propose une relecture de ses propres conceptions sur la psychopathologie, selon laquelle il considère que les manifestations clinique...