[Anankastic phenomena in psychiatry (predestination and dace in mental life)].

The purpose of this communication is to compare behavioral mineralization occurring in mental illness to the freshness and plasticity behavior in health. The epistemological fundamentals of this paper include the theories of chaos and complexity of Edgar Morin, the concept of autopoiesis developed from the theory of systems, the latest discoveries on the neurobiology of consciousness and their associations with Darwinian psychiatry and also, following Lain Entralgo, recreating the Greek concept of ananke to describe the behavior fixation in an anachronistic place of the physis in mental illness. It provides some empirical evidence to support the proposal, and all this is rigorously examined with hermeneutic phenomenology and its theoretical possibilities.