Pulmonary arterial hypertension (pah) symptoms are caused by a lack of oxygen due to narrowed blood vessels in the lungs and increased stress on the heart.
1 breathlessness or shortness of breath (dyspnea), the most common symptom
2 feeling tired all the time
3 dizziness, especially when climbing stairs or when standing up
4 fainting (syncope)
5 swollen ankles & legs (edema).
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