This is my first summer since being diagnosed with PV in December. I have been doing really well and take hydroxy 500 mg daily and venesection monthly. But I'm now feeling dreadful ever since the temperature has risen. I know all about dealing with the sun but need some help/advice on coping with the heat. I'm keeping hydrated and keeping the house cool but I still feel sick and lethargic and come out in a sweat when doing the slightest thing. The itching is also bad. Can anyone give me some tips? I'm sorry to be so negative but I'm feeling desperate.