Hi all. I'm 70 and had ET from 2003 until 2014 when I progressed to PV. I was then put on hydroxycarbomide 500 my per day. It has brought my countsdown to pretty well normal. I feel very tired, itchy etc but my main problem is breathlessness which is really affecting my life. I have had lung and heart tests and no reason for breathlessness was found. Therefore I guess it's being caused by the PV or the hydroxycarbomide. I was wondering if I changed to Pegasys would that stop the breathlessness. Has anybody got any advice before I see my consultant on Wednesday?