Polycythemia Vera Diagnosis and Treatment

Common Symptoms

Microvascular disturbances, including headache, light-headedness, transient neurologic or ocular disturbances, tinnitus, atypical chest discomfort, and paresthesias, are common in patients with polycythemia vera, as reported by the Mayo Clinic Proceedings 1, 2
Erythromelalgia, a painful and burning sensation of the feet or hands associated with erythema and warmth, occurs in approximately 3% of polycythemia vera patients, according to the Mayo Clinic Proceedings 1, 2
Pruritus, or generalized itching, is documented in up to 48% of patients, as noted by the Mayo Clinic Proceedings 1

The presence of a JAK2 mutation is crucial for distinguishing polycythemia vera from secondary causes of erythrocytosis, and is present in >95% of cases, as reported by Praxis Medical Insights and other sources 3

Patients with polycythemia vera are stratified into high-risk and low-risk categories to guide treatment decisions, with high-risk defined as age ≥60 years or positive history of thrombosis, and low-risk defined as age <60 years and no history of thrombosis, according to the Annals of Oncology and Praxis Medical Insights 3, 4

Phlebotomy is recommended to maintain hematocrit <45% in all patients to reduce thrombotic risk, as suggested by the Annals of Oncology and Praxis Medical Insights 3, 4
Low-dose aspirin (81 mg daily) is recommended for all patients without contraindications to prevent thrombotic complications, according to the Annals of Oncology and Praxis Medical Insights 3, 4
Hydroxyurea is a first-line cytoreductive agent for high-risk patients, as recommended by the Annals of Oncology and Praxis Medical Insights 3, 4
Interferon-α is an alternative first-line treatment, particularly recommended for women of childbearing age, patients with intractable pruritus, and young high-risk patients, as noted by the Mayo Clinic Proceedings and Praxis Medical Insights 1, 3
Selective serotonin reuptake inhibitors have shown effectiveness in treating pruritus, as reported by the Mayo Clinic Proceedings 5
Low-dose aspirin (81 mg/day) is effective in treating erythromelalgia, according to the Mayo Clinic Proceedings 1, 2

Overzealous phlebotomy can increase the risk of stroke in certain conditions, and maintaining hematocrit at appropriate levels is crucial, as warned by the Mayo Clinic Proceedings 5
Neglecting risk factors, such as failure to address modifiable vascular risk factors like smoking, can worsen outcomes, as noted by the Annals of Oncology 4
Inadequate hematocrit control can lead to increased thrombotic events, and maintaining hematocrit strictly below 45% is essential, as emphasized by the Annals of Oncology 4