I was diagnosed with PV in June this year after being told I was just depressed! Had two venesections, felt good after first one but not much improvement in fatigue after second one. Itching and night sweats are worse. Been at hospital, told I have definitely got PV but fatigue is not a symptom at level hematocrit is just now - .43%. Could be low iron, but they won't test level cause they can't give me iron tablets anyway. Told to talk to GP - who admits he knows nothing much about PV. Despairing!