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Definition
By Mayo Clinic staffThrombocytosis is a disorder in which your body produces too many platelets (thrombocytes), which play an important role in blood clotting. Also known as reactive thrombocytosis, the disorder can affect children and adults.
Reactive thrombocytosis occurs in response to an underlying condition. Thrombocytosis isn't likely to cause symptoms.
Your treatment for thrombocytosis depends on the underlying condition that causes it. In most cases, your platelet count will return to normal after the condition is resolved.
