Psychosomatic medicine defines a medical perspective that investigates biological, psychological and social influences on origin, onset and course of somatic diseases and functional bodily syndromes in a systematic and balanced way, and that stresses a patient-centred approach in treatment. There are various historical pathways, manifold scientific and health care interests making definition and range of psychosomatic medicine difficult. Central areas of psychosomatic work are the comorbidity of somatic diseases and psychological disorders, syndromes of somatization, impaired styles of coping with medical conditions and difficult illness behaviour, and the psychological and psychosocial sequelae of chronic diseases. Following a biopsychosocial model psychosomatic treatments favour both psychotherapeutic and psychopharmacological strategies. Within health delivery system there is consensus to promote a general psychosomatic perspective in medical education and qualification and to strengthen psychosomatic competencies in primary care and medical specialties. As a proper medical specialty psychosomatic medicine refers to consultation-liaison services at its main professional area. At an academic level an independent clinical department may be justified in respect of the manifold tasks of education and research. There is a major need of psychosomatic rehabilitation within modern society. Regarding separate psychosomatic inpatient facilities there is a fierce controversy in German-speaking countries between the specialities of psychosomatic medicine and psychotherapy on the one hand and psychiatry and psychotherapy on the other.