Psychoanalysis (or sometimes called psychoanalytical psychotherapy) is a form of psychological treatment (but rather called an open-ended practice), based on an understanding of the unconscious mind, arising out of the pioneering work of Sigmund Freud. It has also been described as a unique kind of conversation that focuses upon the experience of the individual.
There are some who claim that psychoanalysis is limited to the theories arising solely out of the work of Freud, Klein and a number of other theorists concerned principally with the nature of early relationships. Others believe that the practice of psychoanalysis is much broader in scope and far more ancient that the origins of Freud and Klein.
This broader view of psychoanalysis includes the work of Jung and analytical psychology; the Lacanian or French school; and the phenomenological. existential, and other related philosophical schools.
This is the broader tradition of psychoanalysis which my practice is informed by. For example I am informed by the work of Georges Bataille, Jacques Lacan, Jacques Derrida, Herbert Marcuse, Soren Kierkegaard, R.D. Laing, David Cooper, Ludwig Wittgenstein, Julia Kirsteva, Martin Heidegger, Gilles Deleuze, Felix Guattari, Friedrich Nietzsche, and the ancient Greeks (i.e., Parmenides and Plato).