Valvular heart disease occurs when one or more of the heart's valves are damaged, affecting the normal flow of blood through the heart. This condition can involve valve stenosis (narrowing of the valve opening) or valve regurgitation (leakage of the valve), both of which can impair heart function over time. Common causes include age-related changes, infections like endocarditis, or congenital defects. Symptoms of valvular heart disease may include fatigue, shortness of breath, and swelling in the legs. Treatment options vary based on the severity of the condition and may include medications to control symptoms or surgical interventions such as valve repair or replacement. Early detection and management are key to preventing more severe complications.