The signs/symptoms of pulmonary hypertension include the following: 1  Shortness of breath. 2  Fatigue. 3  Chest pain.  Palpitations (heartbeat rate 1  increased) Pain (right side of the abdomen)  Poor 1  appetite. Lightheadedness.  Fainting or 1  syncope. Swelling (legs/ 2 ankles)  Cyanosis.