We have studied the psychopathology of a young schizophrenic patient drug-addict exclusively to ether. The clinical evidence shows the acute ebriety as an experience lived in childist enjoyment, evoking mood of his infantile enfastening to the indifferent attitude of his parents. The obessive and impulsive intake of the drug, shows this behaviour as a defense process having the value of protection against dissociative anxiety. When addictive behaviour stopped, with interruption of the psychotic evolution, and return in family life, appears nevertheless hebephrenic impoverishment of feelings and personality structure, stabilished in his autistic way of life.