noun[mass noun] Medicine
- Abnormal proliferation of the cells that produce blood platelets, leading to an excess of platelets in the blood and increasing risk either of thrombosis or of bleeding.More example sentences
- The blood dyscrasias that most commonly lead to leg ulceration are sickle cell disease, thalassaemia, thrombocythaemia, and polycythaemia rubra vera.
- Erythromelalgia, a symptom complex of painful inflammatory vasodilatation of extremities, is usually idiopathic or due to thrombocythaemia.
- Dehydration during the marathon combined with an underlying thrombocythaemia probably precipitated his thrombosis.