Analogizing from a medical definition of the concept ("restriction of an organ function") does not perfectly express the psychopathological specificity of the notion of inhibition. Thus when Freud states that the "ego-function of an organ is impaired if its erotogenicity—its sexual significance—is increased," (1926d [1925]) this mechanism, which is borrowed from the clinical psychoanalysis of hysteria, provides no psycho-pathological differentiation between the inhibition and the symptom.