Primary polycythemia vera: 4 recognizing symptoms and diagnosis

Polycythemia Vera is a rare form of blood cancer that can cause many dangerous complications such as blood clots, strokes, or heart attacks if not detected promptly. According to medical studies, many people live with the disease for years without knowing because the initial symptoms are often vague and easily mistaken for common fatigue.

Do you frequently experience headaches, dizziness, itchy skin after showering, or feel a lack of energy despite living a normal life? These could be warning signs of Polycythemia Vera. Early recognition of symptoms, understanding potential risks, and undergoing necessary tests will help improve the effectiveness of disease management and significantly reduce the risk of serious complications.

In this article, you will learn how to recognize the common signs of Polycythemia Vera, dangerous symptoms that require immediate medical attention, and diagnostic methods to accurately identify the disease.

Part 1: How to Accurately Identify Polycythemia

Symptom 1: What are the signs of Polycythemia Vera?

Record symptoms for early disease detection

If you suspect you have Polycythemia Vera, you should make a habit of noting down any unusual physical manifestations daily. Tracking symptoms helps doctors accurately assess your health condition and supports an effective diagnostic process.

Record the symptoms that appear, their duration, and their impact on daily life. Then, compare them with the common symptoms of the disease below:

• Persistent or recurrent headaches.
• Easy bleeding or unexplained bruising.
• Itchy skin, especially after warm or hot showers.
• Dizziness, lightheadedness, or loss of balance.
• Frequent fatigue, body weakness.
• Unusual excessive sweating, even without strenuous activity.

Pay attention to signs related to joints and blood circulation

Some people with Polycythemia Vera may experience problems due to poor blood circulation or elevated blood cell counts.

• Joint pain and swelling, especially in the big toe.
• Aching or cramping in the calf muscles.
• Numbness and tingling in the extremities.
• Stinging or burning sensation in the hands and feet.
• Persistent hot, uncomfortable feet.

Monitor symptoms affecting respiration

When red blood cell count increases excessively, blood circulation and oxygen supply can be affected, leading to respiratory symptoms.

• Shortness of breath during physical activity.
• Feeling breathless or not getting enough deep breaths.
• Difficulty breathing when lying down, especially at night.

Do not ignore signs in the chest and abdomen

Some seemingly simple symptoms can also be related to Polycythemia Vera and should be noted.

• Chest pain or tightness.
• Feeling of fullness, bloating in the upper left abdomen.
• Tinnitus or persistent ringing in the ears.

When should you see a doctor?

If you notice many of the above symptoms appearing simultaneously or persisting for several weeks, proactively seek a hematologist. Early detection of Polycythemia Vera, abnormal polycythemia, and related complications will help achieve better treatment effectiveness and reduce the risk of dangerous blood clots.

Symptom 2: When should you see a doctor for Polycythemia Vera?

Schedule an appointment if suspicious symptoms appear

If you notice one or more signs consistent with Polycythemia Vera, such as persistent headaches, dizziness, itchy skin after showering, fatigue, or shortness of breath, proactively schedule an appointment with a doctor as soon as possible. Early examination helps detect the disease in its initial stages and limits the risk of complications related to polycythemia and blood clot formation.

Bring your health diary to the appointment

Before the appointment, you should prepare the recorded information about your health condition.

• List the symptoms you are experiencing.
• Specify the time of appearance and frequency.
• Track the severity of each symptom.
• Record any medications or supplements you are currently taking.

This information will help the doctor assess your condition more accurately and shorten the diagnosis time.

Actively discuss the risk of disease with your doctor

During the examination, do not hesitate to ask questions to better understand your health condition.

• Are the current symptoms related to Polycythemia Vera?
• Am I at risk for Polycythemia Vera?
• What could be causing these symptoms?

Ask about necessary diagnostic tests

To accurately diagnose the disease, your doctor may order several specialized tests. You can ask additional questions such as:

• Do I need a blood test to check my red blood cell count?
• Is there a test that can accurately identify Polycythemia Vera?
• What other tests do I need to rule out other conditions?

Do not delay health check-ups

Many cases of Polycythemia Vera progress silently for a long time before complications appear. Therefore, if symptoms persist or become increasingly severe, see a doctor early for timely diagnosis and treatment.

Symptom 3: Stroke signs requiring immediate emergency care

Do not be complacent about the risk of stroke in people with Polycythemia Vera

People with Polycythemia Vera have a higher risk of blood clot formation than normal because the blood becomes thicker and circulates slowly. When a blood clot blocks a cerebral blood vessel, the patient can suffer a stroke, a medical emergency that can be life-threatening or cause long-term sequelae.

If any of the following signs appear, call emergency services or go to the nearest medical facility immediately.

Difficulty speaking or understanding speech

This is one of the most common signs of stroke.

• Slurred speech or unclear pronunciation.
• Difficulty articulating thoughts into words.
• Inability to understand what others are saying despite hearing sounds.

Numbness, weakness, or paralysis on one side of the body

Symptoms often appear suddenly and affect only one side of the body.

• Numbness or tingling in the face, arm, or leg.
• Muscle weakness making movement difficult.
• Drooping mouth or facial asymmetry.
• Partial or complete paralysis of one side of the body.

Abnormal visual disturbances

Cerebral ischemia can directly affect vision.

• Sudden blurred vision.
• Double vision.
• Decreased vision in one or both eyes.
• Temporary or sudden vision loss.

Severe headache of unknown cause

Headaches associated with stroke often appear suddenly and are more severe than usual.

• Sudden, severe headache.
• Pain accompanied by stiff neck or facial pain.
• Does not improve with rest or common pain relievers.

Nausea, vomiting, and altered consciousness

When the brain is severely affected, the patient may exhibit clear neurological signs.

• Sudden nausea or vomiting.
• Lethargy, decreased alertness.
• Difficulty concentrating or slow reactions.
• May lose consciousness in severe cases.

Confusion and cognitive decline

Some people exhibit changes in behavior or cognition before being diagnosed with a stroke.

• Suddenly feeling confused.
• Difficulty remembering new information.
• Disorientation regarding time or place.
• Difficulty recognizing their own location or surrounding objects.

Act immediately upon detecting symptoms

Time is a critical factor in stroke treatment. If you or a loved one with Polycythemia Vera experiences suspicious signs, call emergency services immediately instead of waiting for symptoms to disappear on their own. Medical intervention in the first few hours can significantly reduce the risk of death and limit long-term brain damage.

Symptom 4: Who is at risk for Polycythemia Vera?

Identify high-risk groups

Although Polycythemia Vera is a rare blood disorder, the risk of developing the disease tends to increase with age. Understanding whether you belong to a high-risk group will help you proactively monitor your health and detect the disease earlier.

• People aged 60 and above have a higher risk of developing Polycythemia Vera compared to younger individuals.
• The risk of developing the disease generally increases with age.
• Many cases are discovered during routine health check-ups or blood tests.

Proactively monitor your health if you are in a high-risk group

If you are over 60, pay more attention to unusual signs such as:

• Persistent headaches.
• Frequent dizziness or lightheadedness.
• Unexplained fatigue.
• Itchy skin after warm showers.
• Numbness, tingling, or burning sensation in the hands and feet.
• Shortness of breath or chest tightness.

When these symptoms occur continuously or become increasingly severe, you should see a doctor for evaluation and necessary tests.

Share health information with family members

If you are in a high-risk group for Polycythemia Vera, you should discuss this with family members or your primary caregivers.

• Inform your family about the symptoms you are experiencing.
• Share your appointment schedule and test results, if any.
• Ask family members to help monitor for unusual signs, especially those related to stroke or blood clots.

Do not skip regular health check-ups

Because Polycythemia Vera can progress silently for a long time, regular health check-ups and complete blood count tests are effective ways to detect abnormalities in red blood cell count early. Early diagnosis not only helps better manage the disease but also reduces the risk of dangerous cardiovascular complications and thrombosis.

Part 2: Is Polycythemia Vera dangerous?

Note 1: Be aware of complications of Polycythemia Vera

Monitor for abnormal bleeding signs

Although Polycythemia Vera increases the number of blood cells, patients can still experience bleeding issues due to impaired platelet function. This is an important complication that needs to be monitored.

Pay attention if you experience the following signs:

• Frequent or prolonged nosebleeds.
• Bleeding gums when brushing teeth or eating.
• Easy bruising even with minor impacts.
• Unusual bleeding that is difficult to stop.
• Signs of gastrointestinal bleeding such as black stools or blood in the stool.

If these symptoms occur continuously, you should see a doctor for evaluation of the cause and blood tests.

Recognize related diseases due to polycythemia

When the red blood cell count increases excessively over a long period, the body can develop many other health problems in addition to the risk of blood clot formation.

Some common complications include:

• Gout: Elevated uric acid levels in the blood can cause pain, swelling, and inflammation in the joints, especially in the big toe.
• Stomach and duodenal ulcers: Patients are at high risk of digestive problems such as epigastric pain, bloating, or gastrointestinal ulcers.

Pay attention to the risk of progression to more serious blood disorders

In rare cases, Polycythemia Vera can progress to more dangerous hematological disorders over time.

Signs that require special attention include:

• Increasingly severe fatigue.
• Unexplained weight loss.
• Recurrent infections.
• Anemia or abnormal bleeding.
• Prolonged decline in overall health.

These manifestations may be related to changes in the bone marrow or progressive blood disorders and need to be evaluated by a hematologist.

Do not ignore early warning signs

Early detection of complications of Polycythemia Vera helps reduce the risk of affecting cardiovascular health, the digestive system, and overall health. If you are diagnosed with or suspect you have Polycythemia Vera, closely monitor for unusual symptoms and follow up with scheduled appointments to better manage the disease.

Note 2: Is itchy skin a sign of Polycythemia Vera?

Pay attention to prolonged, unexplained itchy skin

Itchy skin is one of the fairly typical symptoms of Polycythemia Vera. Many patients experience persistent itching for months or even years before receiving an accurate diagnosis.

Unlike itching due to allergies or dermatological conditions, this condition usually does not come with a clear rash but still causes significant discomfort in daily life.

Monitor for itching after showering or exposure to warm temperatures

A characteristic sign of Polycythemia Vera is itchy skin that appears or worsens after showering with warm water, hot water, or being in a hot environment.

You may notice:

• Intense itching after showering.
• Stinging or uncomfortable sensation on the skin.
• Itching lasting from a few minutes to several hours.
• The more you scratch, the more uncomfortable it feels.

This symptom often leads patients to mistake it for skin allergies or common skin conditions.

Note unusual manifestations in the hands and feet

Besides itchy skin, Polycythemia Vera can also cause unusual sensations due to impaired blood circulation.

Common signs include:

• Redder than normal skin on the hands or feet.
• Burning sensation in the hands and feet.
• Tingling like pins and needles.
• Numbness or a crawling sensation under the skin.
• Discomfort increases when the body is hot or active.

Do not ignore persistent symptoms

If skin itching recurs frequently, especially after bathing in warm water, and is accompanied by symptoms such as headache, dizziness, fatigue, or red skin, you should see a hematologist. This could be a sign related to polycythemia vera, a myeloproliferative disorder that can increase the risk of blood clots and cardiovascular complications if not detected early.

Record symptoms to aid diagnosis

To help the doctor make a more accurate assessment, please record:

• When the itching appeared.
• The intensity of itching day by day.
• Factors that worsen the symptoms such as hot baths or hot weather.
• Accompanying symptoms such as red skin, burning, numbness, or fatigue.

This information can help in the diagnosis of polycythemia vera and the selection of an appropriate treatment plan.

Note 3: Risk of blood clots and myocardial infarction

Understand the risk of thrombosis in people with polycythemia vera

In people with polycythemia vera, the high number of red blood cells makes the blood thicker and circulates slower than normal. This increases the risk of forming blood clots, one of the most serious complications of the disease.

When a blood clot blocks the coronary artery, the patient can suffer a myocardial infarction, an emergency that needs to be treated immediately to avoid the risk of death or permanent heart damage.

Recognize the warning signs of myocardial infarction

If you have or suspect you have polycythemia vera, pay special attention to the following symptoms:

• Pain, tightness, or a feeling of pressure in the center of the chest.
• A feeling of tightness or constriction in the chest area.
• Pain radiating from the chest to the arm, shoulder, or back.
• Pain or discomfort in the neck, lower jaw, or shoulder area.

These symptoms can appear suddenly or gradually worsen over time.

Pay attention to signs that are easily overlooked

Not all cases of myocardial infarction present with severe chest pain. Many people only experience vague symptoms, making recognition difficult.

Common signs include:

• Nausea or stomach discomfort.
• Indigestion or burning in the upper abdomen.
• Unusual cold sweats.
• Rapid or difficult breathing.
• Dizziness, lightheadedness.
• Unusual fatigue, especially without much exertion.

Call emergency immediately if myocardial infarction is suspected

If any of the above symptoms appear, especially prolonged chest pain combined with shortness of breath, cold sweats, or dizziness, call emergency services or go to the nearest medical facility immediately. Delaying treatment can increase the risk of dangerous complications and affect the ability to recover.

Actively prevent cardiovascular complications

For people with polycythemia vera, good disease control plays an important role in reducing the risk of blood clots and serious cardiovascular events.

You should:

• Adhere to the doctor's treatment regimen.
• Have regular follow-up visits and blood tests.
• Monitor for any abnormal cardiovascular signs.
• Proactively seek early treatment when symptoms suggestive of thrombosis or myocardial infarction appear.

Early detection and timely intervention are important factors in minimizing dangerous complications associated with polycythemia vera.

Note 4: Recognizing signs of an enlarged spleen

Splenomegaly is a common complication of polycythemia vera

In people with polycythemia vera, the bone marrow produces too many blood cells, causing the spleen to work harder to filter and process these cells. Over time, the spleen can become enlarged or splenomegaly, causing many uncomfortable symptoms that affect daily life.

Early recognition of abnormal signs can help detect complications and ensure timely treatment.

Monitor for early satiety when eating

One of the most common signs of an enlarged spleen is feeling full early even after eating a small amount of food.

You may experience:

• Eating little but quickly feeling full.
• Unable to finish a normal meal portion.
• Loss of appetite.
• A prolonged feeling of fullness after meals.

This occurs because the enlarged spleen presses on the stomach, reducing the space for food.

Pay attention to pain or discomfort in the upper left abdomen

The spleen is located in the upper left side of the abdomen. When this organ increases in size, the patient may feel:

• Dull pain or heavy pressure in the upper left abdomen.
• Prolonged discomfort below the left costal margin.
• A feeling of tightness when sitting for long periods or after meals.

If symptoms become increasingly clear, you should inform your doctor for examination.

Recognize a feeling of fullness in the left abdomen

In addition to pain, many people describe a feeling of:

• Fullness in the upper left side.
• Something pressing in the abdomen.
• Discomfort when bending over or exerting oneself.

This is a common sign when the spleen is enlarged due to polycythemia vera.

Note pain radiating to the left shoulder

In some cases, an enlarged spleen can cause pain to radiate to the left shoulder area.

Symptoms may include:

• Dull pain in the left shoulder.
• Aching sensation with no clear cause.
• Increased pain when breathing deeply or changing positions.

Although this symptom does not always appear, it is still a sign to be aware of when evaluating complications of polycythemia vera.

Record symptoms to aid diagnosis

If you suspect your spleen is enlarged, keep a health journal of your symptoms, including:

• When the symptoms appeared.
• The intensity of pain or discomfort.
• Frequency of early satiety after eating.
• Accompanying signs such as fatigue, weight loss, or prolonged abdominal fullness.

This information will help the doctor more accurately assess the condition of splenomegaly, a fairly common complication in people with polycythemia vera.

Part 3: Polycythemia vera testing process

Step 1: Blood tests for polycythemia vera diagnosis

Discuss necessary blood tests with your doctor

Blood tests are an important step in detecting and diagnosing polycythemia vera. In fact, many cases are discovered incidentally when patients undergo routine health check-ups or tests for other reasons.

Because changes in blood count often occur slowly, the disease can exist for a long time without causing clear symptoms.

Complete Blood Count (CBC)

One of the first tests your doctor will usually order is a complete blood count (CBC).

This test helps assess:

• Red blood cell count.
• White blood cell count.
• Platelet count.
• Blood cell-related indices.

If the red blood cell count is abnormally high, your doctor may suspect polycythemia vera and order further specialized tests.

Check Hemoglobin and Hematocrit levels

Two important indices often used to aid diagnosis are:

• Hemoglobin (Hb): A protein in red blood cells that carries oxygen.
• Hematocrit (HCT): The percentage of red blood cells in the total blood volume.

In people with polycythemia vera, these indices are often higher than normal due to the body producing too many red blood cells.

Measure Erythropoietin (EPO) hormone levels

Your doctor may also order a test for the hormone Erythropoietin (EPO) to help determine the cause of increased red blood cells.

This test helps:

• Differentiate polycythemia vera from secondary forms of erythrocytosis.
• Aid in evaluating the mechanism of red blood cell production in the body.
• Increase the accuracy of the diagnostic process.

Preparation before blood tests

For more reliable test results, you should ask your doctor about the requirements before blood collection.

Some helpful questions include:

• Do I need a blood test to check for polycythemia vera?
• Do I need to fast before the test?
• Are there any medications I need to stop taking before blood collection?
• What should I prepare to ensure the most accurate test results?

Combine multiple tests to confirm diagnosis

No single test can definitively confirm polycythemia vera. Typically, doctors will combine complete blood count results, hemoglobin, hematocrit, EPO levels, and other specialized tests to make an accurate diagnosis and develop an appropriate treatment plan.

Step 2: Interpreting polycythemia vera test results

Discuss test results thoroughly with your doctor

After completing blood tests, take time to discuss the meaning of each indicator directly with your doctor. Results may be communicated during a follow-up appointment or over the phone, depending on the medical facility's procedures.

Understanding abnormal indicators will help you understand your risk of developing polycythemia vera and plan appropriate health monitoring.

Elevated red blood cell count

This is the most characteristic sign of polycythemia vera.

When test results show:

• Red blood cell count higher than normal.
• Blood becomes thicker.
• Increased risk of blood clot formation.

Your doctor may order additional specialized tests to determine the cause.

Elevated platelet or white blood cell count

In addition to red blood cells, some people with polycythemia vera also experience increased production of other blood cells.

Test results may show:

• Abnormally high platelet count.
• White blood cell count exceeding the reference range.
• Multiple blood cell lines with increased numbers.

This is a common sign in myeloproliferative disorders.

Elevated Hematocrit (HCT) level

Hematocrit reflects the proportion of red blood cells in the total blood volume.

When this index is elevated:

• Blood tends to be thicker than normal.
• Blood flow slows down.
• Increased risk of thrombosis and cardiovascular complications.

This is one of the important criteria supporting the diagnosis of polycythemia vera.

Elevated Hemoglobin (Hb) level

Hemoglobin is the component that transports oxygen in the blood.

In people with the disease, tests often show:

• Hemoglobin higher than normal.
• Increased oxygen-carrying capacity, but also makes the blood thicker.
• Risk of symptoms such as headache, dizziness, or red skin.

Decreased Erythropoietin (EPO) hormone level

The hormone Erythropoietin (EPO) plays a role in stimulating the body to produce red blood cells.

In cases of polycythemia vera, results often show:

• EPO levels lower than normal.
• The bone marrow produces too many red blood cells spontaneously without stimulation from EPO.
• This is an important sign to differentiate the disease from other causes of erythrocytosis.

Do not rely on a single indicator for conclusion

Although the above indicators may suggest polycythemia vera, doctors usually do not diagnose the disease based on a single test result.

Diagnosis typically combines multiple factors such as:

• Clinical symptoms.
• Complete blood count.
• Hemoglobin and Hematocrit levels.
• EPO levels.
• Related gene mutation tests.
• Other specialized tests as needed.

If any indicators are abnormal, ask your doctor for a detailed explanation to understand your health condition and appropriate treatment direction.

Step 3: Bone marrow biopsy for polycythemia vera diagnosis

Learn about bone marrow biopsy

When blood tests show signs suggestive of polycythemia vera, your doctor may recommend a bone marrow biopsy or bone marrow aspiration to assess bone marrow activity.

This is one of the important tests that helps determine if the bone marrow is producing too many blood cells, and also helps differentiate it from other hematological diseases.

How do bone marrow aspiration and biopsy differ?

Depending on the case, the doctor may order one or both procedures.

• Bone marrow aspiration: A small amount of bone marrow fluid is collected for analysis of blood cells.
• Bone marrow biopsy: A sample of bone marrow tissue is collected to assess the structure and activity of the bone marrow.

These two methods are often performed together to provide more comprehensive information for the diagnostic process.

Role of bone marrow examination in polycythemia vera

Biopsy results can help your doctor:

• Assess the degree of cell proliferation in the bone marrow.
• Determine the overproduction of red blood cells, white blood cells, or platelets.
• Aid in the diagnosis of polycythemia vera when combined with blood tests and other specialized tests.
• Rule out some myeloproliferative disorders or similar hematological diseases.

Discuss with your doctor after receiving results

After completing the test, proactively ask your doctor to understand the meaning of the results.

Some helpful questions include:

• Are the bone marrow biopsy or aspiration results available yet?
• Is my bone marrow producing too many blood cells?
• Are these results consistent with a diagnosis of polycythemia vera?
• Do I need to undergo any further tests to confirm the diagnosis?

Combining multiple tests for an accurate diagnosis

Although a bone marrow biopsy is a highly valuable test, doctors will often evaluate the results in conjunction with:

• Complete blood count (CBC).
• Hemoglobin and Hematocrit levels.
• Erythropoietin (EPO) hormone levels.
• Genetic mutation testing related to polycythemia vera.
• The patient's clinical symptoms.

This combination helps increase the accuracy of the diagnosis and develop an appropriate treatment plan for each case.

Don't worry too much if a bone marrow biopsy is indicated

Many people feel anxious when they hear about a bone marrow procedure. However, this is an important assessment step that helps doctors understand the bone marrow's activity and determine the cause of increased blood cells. Early and accurate diagnosis will help manage polycythemia vera more effectively and reduce the risk of serious complications in the future.

Step 4: JAK2 gene testing in polycythemia

Ask your doctor about gene mutation test results

In addition to blood tests and bone marrow biopsies, your doctor may order JAK2 gene mutation testing to support the diagnosis of Polycythemia Vera. This is one of the important tests to identify the cause of the bone marrow producing too many blood cells.

If you have already had the test, you should actively discuss the results with your doctor to understand their meaning.

What is a JAK2 gene mutation?

The JAK2 gene is involved in regulating the development and production of blood cells in the bone marrow. When a mutation occurs, the cell proliferation signals can become overactive, causing the body to produce more red blood cells than normal.

Among the mutations associated with Polycythemia Vera, the JAK2 V617F mutation is the most common form.

Role of JAK2 testing in diagnosis

Gene mutation testing helps doctors:

• Support the diagnosis of polycythemia vera.
• Differentiate the disease from other causes of increased red blood cells.
• Assess the cause of abnormal blood cell proliferation.
• Combine with other tests to improve diagnostic accuracy.

However, gene test results will not be used in isolation but will always be evaluated along with clinical signs and other specialized tests.

Questions to ask your doctor

After receiving your test results, you can ask:

• Did the test results find any gene mutations associated with polycythemia vera?
• Do I carry the JAK2 V617F mutation?
• How do these results affect my diagnosis and treatment?
• Do I need any further genetic testing or other specialized tests?

What does a positive result mean?

If the test detects a JAK2 V617F mutation, this can be important evidence supporting the diagnosis of Polycythemia Vera or some other myeloproliferative disorders. However, the doctor still needs to combine other factors such as:

• Red blood cell, white blood cell, and platelet counts.
• Hemoglobin and Hematocrit levels.
• Erythropoietin (EPO) hormone levels.
• Bone marrow biopsy results.
• Current clinical symptoms.

Understanding JAK2 gene testing correctly

Detecting a JAK2 mutation does not automatically confirm the disease. The final diagnosis must be made by a hematologist based on a comprehensive evaluation of test results and the patient's actual health status. This allows for early detection of polycythemia vera and the development of an appropriate treatment plan to reduce the risk of long-term complications.

Step 5: Additional tests for polycythemia diagnosis

Discuss other specialized tests with your doctor

In many cases, basic blood tests alone may not be sufficient to confirm Polycythemia Vera. Therefore, your doctor may recommend additional tests to comprehensively assess your health status and rule out other causes of increased red blood cells.

If the diagnosis remains unclear, do not hesitate to ask your doctor if you need to undergo further specialized tests.

Check vitamin B12 levels

People with polycythemia vera sometimes have higher than normal vitamin B12 levels in their blood.

This test can help:

• Support the evaluation of bone marrow activity.
• Provide additional data for the diagnostic process.
• Combine with other hematological indicators to increase accuracy.

However, vitamin B12 levels are not used as an independent diagnostic criterion.

Measure blood oxygen saturation

Oxygen saturation testing helps determine if the increased red blood cells are related to prolonged oxygen deficiency in the body.

The purpose of the test includes:

• Assessing the ability to deliver oxygen to organs.
• Differentiating polycythemia vera from polycythemia due to lung or heart disease.
• Supporting the search for the cause of increased red blood cell count.

If blood oxygen levels are low, your doctor may consider causes other than Polycythemia Vera.

Perform a comprehensive metabolic panel

Your doctor may also order a Comprehensive Metabolic Panel (CMP) to assess the function of various organs in the body.

This test typically checks:

• Liver function.
• Kidney function.
• Electrolyte levels.
• Blood sugar.
• Several other important metabolic indicators.

The results can help detect co-existing health problems or complications related to the disease.

Ask your doctor about tests appropriate for your condition

During your appointment, you can ask questions such as:

• Do I need any additional tests to diagnose polycythemia vera?
• Is vitamin B12 testing necessary in my case?
• Should I have my blood oxygen saturation checked?
• Will the results of the comprehensive metabolic panel help clarify the cause of increased red blood cells?

Accurate diagnosis requires multiple factors

The diagnosis of Polycythemia Vera typically does not rely on a single test. Your doctor will combine various pieces of information, including:

• Clinical symptoms.
• Complete blood count.
• Hemoglobin and Hematocrit levels.
• Erythropoietin (EPO) levels.
• JAK2 gene mutation testing.
• Bone marrow biopsy.
• Other additional tests as needed.

This comprehensive approach improves diagnostic accuracy and ensures that patients receive appropriate treatment from an early stage.

Step 6: Treating polycythemia vera

Discuss a long-term treatment plan with your doctor

If you are diagnosed with Polycythemia Vera, the next step is to develop a treatment plan tailored to your health condition. This is a chronic myeloproliferative disorder, and while there is currently no complete cure, proper treatment can help control symptoms and significantly reduce the risk of complications.

Treatment goals typically include:

• Reducing the number of abnormally increased blood cells.
• Limiting the risk of blood clot formation.
• Controlling uncomfortable symptoms.
• Preventing cardiovascular and thrombotic complications.
• Maintaining quality of life over the long term.

Learn about low-dose aspirin

In many cases, your doctor may prescribe low-dose aspirin to help reduce the risk of blood clot formation.

This method can offer benefits such as:

• Helping to improve blood circulation.
• Reducing the risk of stroke and heart attack.
• Limiting vascular obstruction due to blood clots.

However, aspirin should only be used under a doctor's guidance to avoid the risk of unwanted bleeding.

Learn about therapeutic phlebotomy

One of the most common treatments for polycythemia vera is therapeutic phlebotomy.

This procedure helps to:

• Remove a certain amount of blood from the body.
• Reduce the concentration of red blood cells in the blood.
• Decrease blood viscosity.
• Limit the risk of blood clot formation.

The frequency of treatment will depend on test results and the progression of the disease.

Medications to control blood cell production

For cases with a high risk of complications or those who do not respond well to phlebotomy alone, your doctor may consider using medications to help control bone marrow activity.

For example:

• Hydroxyurea to reduce excessive blood cell production.
• Other specialized treatments depending on the specific case.
• Targeted therapies if deemed appropriate by the doctor.

The choice of medication will be based on age, medical history, and the individual patient's risk of thrombosis.

Controlling itchy skin and other symptoms

Itchy skin is one of the common symptoms of Polycythemia Vera, especially after warm baths.

Your doctor may suggest:

• Anti-itch medication.
• Supportive therapies to help control symptoms.
• Lifestyle and habit adjustments to reduce discomfort.

In addition, symptoms such as headaches, dizziness, fatigue, or burning sensations in the hands and feet will also be monitored and managed during treatment.

Questions to ask your doctor

To better understand your treatment plan, you can ask:

• What is the most suitable treatment method for my condition?
• Do I need to undergo therapeutic phlebotomy?
• What medications are commonly used to treat polycythemia vera?
• How often do I need follow-up appointments and blood tests?
• What lifestyle changes do I need to make to reduce the risk of complications?

Early treatment helps reduce the risk of complications

Although polycythemia vera is a chronic disease, many people can maintain a stable life for many years with proper monitoring and treatment. Adhering to the treatment regimen, regular follow-ups, and controlling risk factors will help limit serious complications such as blood clots, stroke, and heart attack.

References

1. Arber, D. A., Orazi, A., Hasserjian, R., Thiele, J., Borowitz, M. J., Le Beau, M. M., Bloomfield, C. D., Cazzola, M., & Vardiman, J. W. (2016). The 2016 revision to the World Health Organization classification of myeloid neoplasms and acute leukemia. Blood, 127(20), 2391–2405.
2. Barbui, T., Thiele, J., Gisslinger, H., Kvasnicka, H. M., Vannucchi, A. M., Guglielmelli, P., Orazi, A., Tefferi, A., & The International Working Group for Myeloproliferative Neoplasms Research and Treatment. (2018). The 2016 WHO diagnostic criteria for polycythemia vera, essential thrombocythemia, and primary myelofibrosis: An assessment. Blood Cancer Journal, 8(2), 15.
3. Bose, P., & Verstovsek, S. (2019). Updates in the management of polycythemia vera and essential thrombocythemia. Therapeutic Advances in Hematology, 10, 1–14.
4. Hoffman, R., Benz, E. J., Silberstein, L. E., Heslop, H. E., Weitz, J. I., Anastasi, J., & Salama, M. E. (Eds.). (2024). Hematology: Basic Principles and Practice (9th ed.). Elsevier.
5. Kaushansky, K., Lichtman, M. A., Prchal, J. T., Levi, M., Press, O. W., Burns, L. J., & Caligiuri, M. (Eds.). (2022). Williams Hematology (10th ed.). McGraw-Hill Education.
6. McMullin, M. F. (2019). Diagnosis and management of polycythaemia vera: A review. Clinical Medicine, 19(1), 11–14.
7. Mesa, R. A., Jamieson, C., Bhatia, R., Deininger, M. W., Gerds, A. T., Gotlib, J., Gundabolu, K., Hobbs, G., Mascarenhas, J., & Odenike, O. (2024). NCCN Clinical Practice Guidelines in Oncology: Myeloproliferative Neoplasms. National Comprehensive Cancer Network.
8. Tefferi, A., Barbui, T., & Pardanani, A. (2023). Polycythemia vera: Clinical manifestations, diagnosis, risk stratification, and management. American Journal of Hematology, 98(6), 1018–1034.
9. Tefferi, A., Vannucchi, A. M., & Barbui, T. (2024). Polycythemia vera treatment algorithm 2024. Blood Cancer Journal, 14(1), 1–10.
10. World Health Organization. (2022). WHO Classification of Haematolymphoid Tumours: Myeloid and Histiocytic/Dendritic Neoplasms (5th ed.). International Agency for Research on Cancer.
    

Content edited by: Rowan Hudson Le.

Information consulted and verified by expert: Benjamin Lewis.