Is the itching you re experiencing like having thrush under your skin and a blow torch on the top. In other words a burning type of itch? If so this is the horrid aquagenic pruritis associated with PV. Is it worse after contact with water?
I experienced AP in the beginning ( I ve had PV for 15 years) and the sadly the haematologists and nurses were clueless.
my AP was torso thighs back and neck. Never hands or feet.
I stopped doing everything that antagonised it - mainly bathing showering and swimming.
we have a bidet and I wipe my body with simple micellar water
have a look at Mpnvoice.org.uk - there’s a section on there re itching.
I think your haematologist is wrong.
louise
Over the last few weeks i have started to itch on my back and arms doesn't last very long and only seems to be when i get hot 
Homeopathy for itch
Itching
Update and few questions because i have no reliable sources 
Is itching caused by heavy metal toxicity
