Modern psychodynamic formulations concerning the sexual dysfunctions stem directly from Freud's Three Essays on Sexuality (1905). Amplification and modification of psychoanalytical views since then have provided a further store of observation and clinical theory of personality development and the working of the unconscious mind, from which both behaviourally-, as well as psychoanalytically-orientated workers continue to draw. However, no single unified psychoanalytic theory of sexual dysfunction exists, nor should it at this stage of our understanding. Psychoanalysis continues to be the major source of psycho-dynamic principles in this field; there are three avenues down which progress is being made. The first, which forms the body of this contribution, is the application of psychoanalysis to the psychotherapeutic treatment of sexual dysfunctions. The second is the amalgamation of certain of the techniques and principles of psychoanalysis together with active behavioural practices based on the discoveries of Masters and Johnson and the behavioural therapists. [Singer (1974) in the USA; Robinson and Creed (1980) in the UK]. The third, no less interesting from a psychodynamic point of view is the way in which some modern behavioural learning theory psychologists are finding themselves facing psychodynamic complexities, such as transference, counter-transference, and a growing reliance on talking rather than manipulative procedures. Some behavioural sex-therapists see themselves as psychotherapists (Mackay, 1976). A knowledge of psychodynamics is therefore invaluable whatever one's final clinical approach.