Healthcare is structured both horizontally and vertically. On the horizontal level, we distinguish between areas of care such as acute care, long-term care, or rehabilitation. In the vertical structure, we differentiate between general care settings, such as home-based, outpatient, or inpatient care. Although prevention is sometimes interpreted as its own area of care, it primarily represents a field of individual- or population-based health objectives, which are to be achieved through measures within the structured healthcare system as well as in areas outside of healthcare. The structure reflects the relationships between healthcare institutions and also between professions. For the care of people with chronic illnesses, the established perspective on these relationships is not always practical. For them, specialist medical care represents a primary healthcare service to which they require continuous access and which, due to their illnesses, must also relate to their everyday circumstances.