Platelet disorders are conditions that occur when the platelet count in your blood is too high or too low or your platelets do not work properly. Platelets are tiny blood cells that are made in the bone marrow from larger cells. When you are injured, platelets form a plug, called a blood clot, to seal your wound. Blood clots help stop or slow down bleeding.
clotting of blood
Thrombocythemia and thrombocytosis are conditions that occur when your blood has a higher-than-normal platelet count. Platelets are tiny blood cells. They are made in your bone marrow along with other kinds of blood cells. When you are injured, platelets stick together to form a plug that seals your wound.