[Elusive schizophrenia.]

Schizophrenia is caused above all, by a biochemical disorder, and, consequently, the treatment should be primarily of a psycho pharmacological nature. The author examines the most important researches related to this subject to demonstrate the gaps both at the level of actio-logical theories and of treatment methods centered, above all, on biochemical aspects. Schizophrenics are not cured and they are hardly treated, since delusional thoughts and the psychotic life style remain present many years. Schizophrenia stymies the knowledge and the power of therapists as a result of its inexplicable and irréductible character.