A doctor is a trained professional who helps people stay healthy and treat illnesses. They have extensive education and training in medicine, allowing them to diagnose health problems and recommend treatments. Doctors can work in various settings, such as hospitals, clinics, or private practices, and they often specialize in areas like pediatrics, cardiology, or orthopedics. When you visit a doctor, they will usually ask about your symptoms and may perform tests to understand your condition better. Their goal is to help you feel better and maintain your health, often working alongside other healthcare professionals like nurses and pharmacists to provide comprehensive care.