Consultation psychiatry, an outgrowth of the tenets of psychosomatic medicine that followed the departure from mental-hospital psychiatry to the general-hospital-based psychiatric units, is similar to those consultation services in other specialties available on medical-surgical wards. Its primary aim is to interpret the psychosocial phenomena of health and illness and to redirect the physician from disease- to patient-orientation and to a comprehensive approach. Its functions are diagnostic-therapeutic, instructional and research directed. The psychosomatic orientation is a sine qua non in the understanding of the psychosocial meaning of physical illness, its effect on psychic disability, the psychosocial adjustment of the patient and his family and his ability to adapt to illness and the hospital. An essential feature is the evaluation of the doctor-patient relationship, especially when severe illness requires serious interventions, including the consultation and its reciprocal effect upon the doctor-patient relationship. Liaison activity consists of interpretive-therapeutic mediation between the patient and the therapeutic team when strain endangers their satisfactory cooperation. The therapeutic activity must be short-term and so construed as not to interfere with the primary treatment. The instructional aspect is for the sake of the usual recipients of the service, as well as residents and students. Teaching the interview techniques, especially to students, should demonstrate the holistic approach, comprehensive diagnosis and the need of avoiding orthodox one-sidedness. This paper reviews briefly the scope and role of consultation psychiatry, compares its North American model with its status elsewhere and explores the resistances to it.