60%-80% of all outpatients worldwide have a chronic disease, and this fact demonstrates that an essential part of primary care practice will be the prevention, treatment, and rehabilitation of chronic illnesses. The medical literature, which states that the cost, mortality, and morbidity rates will decrease when the healthcare service is improved, has led to writing this comprehensive and up-to-date book. In addition to the sections where you can find detailed information about each stage of chronic disease follow-up, the book includes up-to-date information accompanied by guidelines and ways to be followed in clinical practice, including primary prevention.