Comorbid mental disorders are common in patients with chronic conditions. It can be assumed that around 30% of all inpatients have some kind of mental disorder. Most frequent are depressive disorders, anxiety disorders, somatoform disorders, and addictive disorders. Mental disorders are not only a subjective burden for the patient, but may also lead to an unfavourable course of the disease, longer hospital stay, and increased treatment costs. However, despite its importance comorbid mental disorders are often not recognized or appropriately treated. Wherever possible, patients with psychological issues should be presented to a psychosomatic or psychiatric consultation-liaison service for further diagnosis and treatment. To treat patients with comorbid mental disorders, physicians must be well experienced in psychotherapeutic treatment and a collaborative interdisciplinary working environment must have been established.
