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Pulmonary hypertension (PH) refers to high blood pressure in the blood vessels that travel between the heart and lungs. Pulmonary arterial hypertension (PAH) is a specific subset of PH. Here are the key differences:

- Pulmonary Hypertension (PH)
- General term for high blood pressure in the lungs' blood vessels.
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Pulmonary hypertension (PH) refers to high blood pressure in the blood vessels that travel between the heart and lungs. Pulmonary arterial hypertension (PAH) is a specific subset of PH. Here are the key differences:

- Pulmonary Hypertension (PH):
- General term for high blood pressure in the lungs' blood vessels.
- Includes multiple types, classified by the World Health Organization (WHO) into five groups.

- Pulmonary Arterial Hypertension (PAH):
- Falls under WHO Group 1.
- A rare disorder with 500 to 1,000 new cases diagnosed each year.
- Causes high blood pressure specifically in the arteries of the lungs.

For more detailed information, you can refer to the resources provided in the knowledge base.

 This AI-generated response comes from myPHteam and other selected sources. It is not a substitute for medical advice. Always ask your doctor about specific health concerns.

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