Chronic illnesses are long-lasting health conditions that can persist for months or even years. They often require ongoing medical attention and can significantly impact a person's daily life. Common examples include diabetes, asthma, and heart disease. These conditions may not have a cure, but they can often be managed with proper treatment and lifestyle changes. People with chronic illnesses may experience symptoms that vary in intensity and can affect their physical, emotional, and social well-being. Management strategies often include medication, regular check-ups, and support from healthcare professionals. Education about the illness is also crucial for effective self-management.