Lungs have their own kind of high blood pressure

DEAR DR. DONOHUE: I am a 43-year-old woman and the mother of two young children. I have just been told I have pulmonary hypertension. According to my doctors, this has nothing to do with high blood pressure, which I do not have. This confuses me. I am slightly short of breath when I have to climb stairs from our basement to the second floor, but aside from that I feel OK. What is this thing?