<p>This article emphasizes the importance of psychosomatic cotreatment for patients with chronic illnesses. Chronic diseases are not only physical ailments but also impact psychological and social aspects, as illustrated by the biopsychosocial model. An integrated psychosomatic approach can improve disease management, quality of life, and treatment adherence by addressing emotional, psychological, and social burdens. Studies demonstrate the effectiveness of such interventions, which can also enhance treatment outcomes and reduce healthcare costs. Early psychosomatic screening and interdisciplinary strategies are essential to ensure holistic care. Overall, psychosomatic cotreatment is an indispensable component of the sustainable patient-centered management of chronic conditions.</p>