This chapter presents the clinical history of a patient suffering a psychotic episode, which was characterized by delusions, cenesthetic hallucinations, and a particular way of speaking: very fast, without pauses or silences. It discusses how linguistics allows us to study the alterations of thought, detectable through the alterations of language. It is very important to bear in mind that sometimes fantasies involving fear of bleeding may indicate a different pattern of development and have a different meaning. A patient who is initially diagnosed as an acute psychotic may be confused with an irreversible schizophrenic. Of course at the outset, the clinical presentation may be very similar. An acute psychosis, treated rapidly and adequately, can change a process. In other words, by treating an acute psychosis early, with psychoanalysis, including medication and/or hospitalization, one may change some diagnoses and some evolutions, which might otherwise evolve into a chronic, irreversible schizophrenia.