Hi iam new to this site. I have ET and suffer tirednes and headaches.I am currently taking Hydroxy Carbamide . I have also become anemic ,i dont know wether this is part of ET or something else . I cant take iron supplements because it makes the PV in the ET worse . I have been in limbo with the anemia since April getting worse .I have had tests to see if i am bleeding internally but nothings bleeding. Has anyone else had this problem. I am also vitamin D deficient unknown cause.