https://www.nhlbi.nih.gov/health-topics/thrombocythemia-and-thrombocytosis

Often, a high platelet count doesn't cause signs or symptoms. Rarely, serious or life-threatening symptoms can develop, such as blood clots and bleeding.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3469735/

In patients with ET, headaches may be attributable to the disease, to the ... and patients considered at high risk (i.e. > 60 years of age, or platelet count > 1500 ...

https://www.mayoclinic.org/diseases-conditions/thrombocytosis/symptoms-causes/syc-20378315

Sep 13, 2018 ... Your doctor might detect thrombocytosis in a routine blood test result that shows a high platelet level. If your blood test indicates thrombocytosis, ...

https://www.merckmanuals.com/home/quick-facts-blood-disorders/myeloproliferative-disorders/high-platelet-count

High Platelet Count - Learn about the causes, symptoms, diagnosis & treatment from the Merck Manuals - Medical Consumer Version.

https://www.healio.com/hematology-oncology/news/print/hemonc-today/%7B85fc0923-09cf-4296-a805-b84a03546d67%7D/a-young-mother-presents-with-an-elevated-platelet-count

A 32-year-old woman is found to have an elevated platelet count on routine complete ... She does have occasional headaches, but these have not worsened in ...

https://www.leukaemia.org.au/disease-information/myeloproliferative-disorders/types-of-mpn/essential-thrombocythaemia/

ET is a type of MPN, in which too many platelets are produced in the bone marrow. ... In ET however, the blood platelet count is persistently elevated as a result of ... Many people have no symptoms when they are first diagnosed with ET and ...

https://www.verywellhealth.com/things-that-elevate-your-platelet-count-401336

An elevated platelet count, thrombocytosis, is defined as a platelet count more than 450000 cells per microliter. Learn about what causes it.

https://www.livestrong.com/article/81643-symptoms-high-platelets/

Platelets are cell fragments made by bone marrow that help the blood clot to prevent bleeding and help wounds to heal. While high platelet count can be due to ...

https://www.cancer.org/cancer/acute-myeloid-leukemia/detection-diagnosis-staging/signs-symptoms.html

Aug 21, 2018 ... Although people with AML can have high white blood cell counts due to excess numbers of ... Symptoms from low blood platelet counts.

http://www.mpnresearchfoundation.org/Essential-Thrombocythemia

Consequently, the disease is often diagnosed as part of a routine check-up, after a blood test reveals a high platelet count. When symptoms are present, they ...