Pulmonary hypertension is a rare disorder in which the pressure in the lungs is too great.
Flolan had kept Deborah Collier off the transplant list for two years, but her increasingly weakened heart has made time of the essence if she is to survive. Symptoms of PH include shortness of breath after minimal exertion, fatigue, dizzy spells and fainting. Secondary PH occurs as a result of other medical conditions, including breathing disorders like emphysema and bronchitis. On average, primary PH occurs in two of every 1 million people, according to the Pulmonary Hypertension Association. The disease affects people differently.