Each year, 500 to 1,000 people in the U.S. are diagnosed with pulmonary arterial hypertension (PAH), a progressive and often under-detected disease. To address the significant impact of this disease and improve awareness and resources for those affected, the American Lung Association, with support from Merck, is launching a new educational campaign. Pulmonary arterial hypertension (PAH) is a specific form of pulmonary hypertension, characterized by high blood pressure in the lungs due to obstruction in the small...