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Scientific literature sometimes excludes thrombocytosis from the scope of thrombophilia by definition, [4] but practically, by the definition of thrombophilia as an increased predisposition to thrombosis, [5] [6] thrombocytosis (especially primary thrombocytosis) is a potential cause of thrombophilia.
Essential thrombocythaemia, essential thrombocytosis, primary thrombocytosis: Histopathological image representing a bone marrow aspirate in a patient with essential thrombocythemia. Specialty: Hematology Symptoms: Fatigue, insomnia, migraines, headache, and dizziness. [1] Complications
Elevated platelet concentration is called thrombocytosis, and is either congenital, reactive (to cytokines), or due to unregulated production: one of the myeloproliferative neoplasms or certain other myeloid neoplasms. A disorder of platelet function is called a thrombocytopathy or a platelet function disorder. [4]: vii
One common definition of thrombocytopenia requiring emergency treatment is a platelet count below 50,000/μL. [5] Thrombocytopenia can be contrasted with the conditions associated with an abnormally high level of platelets in the blood – thrombocythemia (when the cause is unknown), and thrombocytosis (when the cause is known). [6] [7]
Thrombosis (from Ancient Greek θρόμβωσις (thrómbōsis) 'clotting') is the formation of a blood clot inside a blood vessel, obstructing the flow of blood through the circulatory system.
Thrombophilia can be congenital or acquired. Congenital thrombophilia refers to inborn conditions (and usually hereditary, in which case "hereditary thrombophilia" may be used) that increase the tendency to develop thrombosis, while, on the other hand, acquired thrombophilia refers to conditions that arise later in life.
The origin of the term "Virchow's Triad" is of historical interest, and has been subject to reinterpretation in recent years. [7] While both Virchow's and the modern triads describe thrombosis, the previous triad has been characterized as "the consequences of thrombosis", and the modern triad as "the causes of thrombosis".
Anagrelide (Agrylin/Xagrid, Shire and Thromboreductin, AOP Orphan Pharmaceuticals AG) is a drug used for the treatment of essential thrombocytosis (also known as essential thrombocythemia), or overproduction of blood platelets.