Hello all. We have just returned from a 10 day holiday to Menorca where it was very hot. Before we went hubby had a red count of 49 and they tried to bring down to 45 with a venesection. But the blood was so thick they could only get out about half what they wanted but they said he would be fine. When away he had excessive sweating, even in an air conditioned room. Is this because his blood it still too thick. His next appointment is for ten weeks so by that time his count will be high again. He has never had excessive sweating abroad before. Thanks.