Polycythemia vera (pol-e-sy-THEE-me-uh VEER-uh) is a type of blood cancer. It causes your bone marrow to make too many red blood cells. These excess cells thicken your blood, slowing its flow, which may cause serious problems, such as blood clots.
Polycythemia vera is rare. It usually develops slowly, and you might have it for years without knowing. Often the condition is found during a blood test done for another reason.
Without treatment, polycythemia vera can be life-threatening. But proper medical care can help ease signs, symptoms and complications of this disease.
Many people with polycythemia vera don't have noticeable signs or symptoms. Some people might develop vague symptoms such as headache, dizziness, fatigue and blurred vision.
More-specific symptoms of polycythemia vera include:
Make an appointment with your doctor if you have signs or symptoms of polycythemia vera.
Polycythemia vera occurs when a mutation in a gene causes a problem with blood cell production. Normally, your body regulates the number of each of the three types of blood cells you have — red blood cells, white blood cells and platelets. But in polycythemia vera, your bone marrow makes too many of some of these blood cells.
The cause of the gene mutation in polycythemia vera is unknown, but it's generally not inherited from your parents.
Polycythemia vera can occur at any age, but it's more common in adults between 50 and 75. Men are more likely to get polycythemia vera, but women tend to get the disease at younger ages.
Possible complications of polycythemia vera include:
Your doctor will take a detailed medical history and perform a physical exam.
If you have polycythemia vera, blood tests might reveal:
If your doctor suspects that you have polycythemia vera, he or she might recommend collecting a sample of your bone marrow through a bone marrow aspiration or biopsy.
A bone marrow biopsy involves taking a sample of solid bone marrow material. A bone marrow aspiration is usually done at the same time. During an aspiration, your doctor withdraws a sample of the liquid portion of your marrow.
If you have polycythemia vera, analysis of your bone marrow or blood might show the gene mutation that's associated with the disease.
There's no cure for polycythemia vera. Treatment focuses on reducing your risk of complications. These treatments may also ease your symptoms.
The most common treatment for polychythemia vera is having frequent blood withdrawals, using a needle in a vein (phlebotomy). It's the same procedure used for donating blood.
This decreases your blood volume and reduces the number of excess blood cells. How often you need to have blood drawn depends on the severity of your condition.
If you have bothersome itching, your doctor may prescribe medication, such as antihistamines, or recommend ultraviolet light treatment to relieve your discomfort.
Medications that are normally used to treat depression, called selective serotonin reuptake inhibitors (SSRIs), helped relieve itching in clinical trials. Examples of SSRIs include paroxetine (Brisdelle, Paxil, Pexeva, others) or fluoxetine (Prozac, Sarafem, Selfemra, others).
If phlebotomy alone doesn't help enough, your doctor may suggest medications that can reduce the number of red blood cells in your bloodstream. Examples include:
Your doctor will also likely prescribe medications to control risk factors for heart and blood vessel disease, including high blood pressure, diabetes and abnormal cholesterol.
Your doctor may recommend that you take a low dose of aspirin to reduce your risk of blood clots. Low-dose aspirin may also help reduce burning pain in your feet or hands.
You can take steps to help yourself feel better if you've been diagnosed with polycythemia vera. Try to:
Be good to your skin. To reduce itching, bathe in cool water, use a gentle cleanser and pat your skin dry. Adding starch, such as cornstarch, to your bath might help. Avoid hot tubs, heated whirlpools, and hot showers or baths.
Try not to scratch, as it can damage your skin and increase the risk of infection. Use lotion to keep your skin moist.
You're likely to start by seeing your primary care physician. If you're diagnosed with polycythemia vera, you might be referred to a doctor who specializes in blood conditions (hematologist).
Here's some information to help you get ready for your appointment.
Make a list of:
For polycythemia vera, questions to ask your doctor include:
Don't hesitate to ask other questions you think of during the appointment. Take a family member or friend along, if possible, to help you remember the information you're given.
Your doctor is likely to ask you questions, including:
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