Comorbid depressive and anxiety disorders in patients with cancer

Patients with cancer face a high risk of comorbid depressive and anxiety disorders that have to be paradigmatically considered within a complex biopsychosocial context. Several conceptual challenges have to be mastered in arriving at a correct clinical diagnosis. Coexistent affective and anxiety disorders in cancer patients include a more dramatic subjective suffering, reduced psychological coping, possible negative interference with somatic treatment and rehabilitation, impaired quality of life and higher grades of psychosocial disability. They may also lead to an overall increased risk of somatic morbidity, a more rapid progression of cancer and a higher cancer-related mortality in the course of the disease. Manifold psychological, psychosocial and existential, cancer and treatment-related stressors have to be considered with respect to common neurobiological, especially neuroendocrine and neuroinflammatory mechanisms. Complex psychosomatic, somatopsychic and somato-somatic effects must always be considered. Evidence-based approaches in psychotherapy and pharmacotherapy exist for the integrative treatment of comorbid depressive and anxiety disorders in cancer.