Psychiatric consultation services are still inadequate and their usefulness still unrecognized. They seem more numerous and more sophisticated in those countries where the supply of psychiatrists is more satisfactory, where general hospitals have psychiatric services, where psychosomatic orientation exists, and where planning for services is more experimental than empirical. Psychiatric consultation service should be rendered by specially trained personnel working in a special service. The psychiatrists rendering such service must be eclectic and possess a satisfactory knowledge of other medical subjects. The consultations must supply instruction about referred cases, so that the knowledge acquired will help in the future management of such cases.