Essential Thrombocythemia: Symptoms, Causes, Treatment
كثرة الصفائح الأولية
Essential thrombocythemia is a chronic marrow disorder that increases platelet production and can cause clots or bleeding. It differs from reactive platelet elevation due to inflammation or iron deficiency.
What is Essential Thrombocythemia?
It may be found incidentally. One high count does not establish a marrow neoplasm; a hematologist combines findings to identify the cause, clot risk and follow-up needs.
Related reading: Polycythemia vera as a different marrow disorder.
Symptoms
Some people have no symptoms; others have headache, dizziness, visual disturbance or red burning extremities. Bruising or bleeding can occur despite a high platelet count.
Causes
Acquired changes in genes controlling blood-cell production, including JAK2, CALR or MPL, commonly contribute. The disease is usually not passed directly from parent to child.
Risk factors
Incidence increases with age but younger people are affected. Prior clots, age, mutation profile and vascular factors influence thrombosis risk; platelet count alone is insufficient.
Diagnosis
Assessment includes repeat counts, a blood film, iron and inflammation tests, genetic studies and sometimes marrow biopsy. Reactive causes and other marrow disorders must be excluded.
Treatment
Care ranges from monitoring to platelet-lowering medicines. Aspirin is prescribed selectively after assessing bleeding and clot risk; never self-start it, particularly with extreme counts or bleeding.
Complications
Arterial or venous clots, bleeding and pregnancy complications can occur. Some cases progress to marrow fibrosis and, rarely, acute leukemia.
Prevention
There is no established genetic prevention. Stop smoking, manage vascular risks and attend follow-up. Pregnancy and surgery require advance planning with the hematology team.
When to see a doctor
Chest pain, sudden breathlessness, speech difficulty or one-sided weakness needs emergency care. Heavy bleeding or black stools requires urgent assessment.