This refers to people who are very unwell and are not likely to get better; they are amputees, on…

3. How does tertiary prevention differ from secondary prevention in chronic illness?
Secondary prevention targets early detection and treatment to stop progression. Tertiary prevention comes after disease is established and centers on rehabilitation, complication management, chronic care coordination, and palliative measures. It aims to restore function, limit disability, and improve long-term quality of life after illness advances.