The document discusses different types of illnesses and how they are treated. A general practitioner treats common illnesses, while medical specialists focus on specific illnesses or body parts like dermatologists and cardiologists. People see doctors at hospitals for medical emergencies, tests, or treatments. Infectious diseases like Ebola, tuberculosis, malaria, and athlete's foot are caused by microorganisms and can be transmitted between people. They are treated with medicines like antibiotics, antivirals, or antifungals. Preventing infectious diseases involves washing hands, cleaning cuts, and avoiding contact. Non-infectious diseases are prevented through a balanced diet, exercise, sleep, and stress management.