Pulmonary hypertension is a condition characterized by high blood pressure in the arteries of the lungs, causing the heart to work harder to pump blood through the lungs. This chronic and progressive condition can lead to serious complications if left untreated. Pulmonary hypertension can be classified into five groups based on its underlying causes, including Pulmonary Arterial Hypertension (PAH), which affects the small arteries in the lungs. Symptoms of this condition include shortness of breath, fatigue, chest pain, dizziness, and swelling in the ankles and legs. Diagnosis involves investigating medical history, physical examination, imaging tests such as echocardiography, and specialized procedures like right heart catheterization. Treatment strategies include medications such as vasodilators, endothelin receptor antagonists, and prostacyclin analogs that help dilate blood vessels and reduce blood pressure in the lungs. Lifestyle changes such as quitting smoking, maintaining a healthy weight, and regular exercise can also be beneficial. This book unravels the recent studies in the field of pulmonary hypertension. Also included in this book is a detailed explanation of the various concepts related to this health condition. For all those who are interested in this subject, this book can prove to be an essential guide.