A high platelet count indicates too many of the small cells (platelets) that help form blood clots. This can cause dangerous clots and bleeding. Also called thrombocytosis or thrombocythemia, ...

Essential thrombocythemia is a chronic condition with excessive platelet production, increasing thrombosis risk, and is often linked to JAK2, CALR, or MPL mutations. Stage 1 ET is manageable with ...

Essential thrombocythemia (ET) is a type of myeloproliferative neoplasm (MPN), a rare blood disorder that causes an increase in the number of blood cells. Some symptoms include headaches, dizziness, ...