Pulmonary hypertension is a condition characterized by high blood pressure in the arteries that supply blood to the lungs. This increased pressure makes it harder for the heart to pump blood through these vessels, leading to symptoms such as shortness of breath, fatigue, and chest pain. It can result from various factors, including heart disease, lung disease, or blood clots. Diagnosis typically involves tests like echocardiograms or right heart catheterization to measure the pressure in the pulmonary arteries. Treatment options may include medications, lifestyle changes, or in severe cases, surgery. Early detection and management are crucial for improving quality of life.