Martin Heidegger’s philosophy influenced both psychiatry and practical psychotherapy of mentally disturbed patients. The essay deals with Heidegger’s concepts of corporeality and disease, as they were expounded in the Zollikon seminars, and discusses the influence of Heidegger’s Dasein-analysis on Ludwig Binswanger and Medard Boss. The concepts of Dasein-analysis, proposed by the two psychiatrists, are also discussed. At the end of the paper the author shows the relevance of Heidegger’s thought for psychiatry and psychotherapy in general and for the so-called anthropological psychiatry in particular.