PH vs. PAH: What’s the Difference?
Pulmonary hypertension (PH) is a general term used to describe high blood pressure in the lungs from any cause.

Pulmonary arterial hypertension (PAH) is a chronic and currently incurable disease that causes the walls of the arteries of the lungs to tighten and stiffen. In someone with PAH, the right side of the heart has to work harder to push blood through narrowed arteries in the lungs. Eventually, the extra stress causes the heart to enlarge and become less flexible, compromising the heart’s ability to push blood out of the heart, through the lungs, and into the rest of the body. Hope this helps! 🙏