Chronic disease refers to long-lasting health conditions that often require ongoing management and can significantly impact a person's quality of life. Common examples include diabetes, heart disease, asthma, and arthritis. Unlike acute illnesses that appear suddenly and are often short-lived, chronic diseases typically develop gradually and can persist for months or even years. They often result from a combination of genetic, environmental, and lifestyle factors, such as poor diet, physical inactivity, and smoking. Effective management of chronic diseases involves regular medical care, lifestyle modifications, medication adherence, and patient education to help control symptoms, prevent complications, and enhance overall health outcomes. Addressing chronic diseases is crucial for improving individual well-being and reducing healthcare costs at the community and national levels.