What Are Thrombocythemia and Thrombocytosis?
Thrombocythemia (THROM-bo-si-THE-me-ah) and thrombocytosis (THROM-bo-si-TO-sis) are conditions in which your blood has a high number of blood cell fragments called platelets (PLATE-lets).
Platelets are made in your bone marrow along with other kinds of blood cells. They travel through your blood vessels and stick […]

