Pulmonary Hypertension Support Group
Pulmonary hypertension (PH) is an increase in blood pressure in the pulmonary artery or lung vasculature, leading to shortness of breath, dizziness, fainting, and other symptoms, all of which are exacerbated by exertion. Depending on the cause, pulmonary hypertension can be a severe disease with a markedly decreased exercise tolerance and right-sided heart failure.
If you do end up down that path the pulmonary hypertension association also publishes a great patient survival guide. You can order it at http://www.phassociation.org/