what causes low white blood cells mayo clinic?
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A low white blood cell count usually is caused by: Viral infections that temporarily disrupt the work of bone marrow. Certain disorders present at birth (congenital) that involve diminished bone marrow function. Cancer or other diseases that damage bone marrow.
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Even worse, it can impair the bone marrow's ability to make red and white blood cells, causing severe anemia and dangerously low numbers of white blood cells. When the number of white blood cells is reduced, your body may have difficulty fighting infections.
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Neutropenia is a blood condition characterized by low levels of neutrophils, which are white blood cells that protect your body from infections. Without enough neutrophils, your body can't fight off bacteria. Having neutropenia increases your risk of many types of infection.
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White blood cell count A mono infection typically causes your body to produce more white blood cells as it tries to defend itself. A high white blood cell count can't confirm an infection with EBV, but the result suggests that it's a strong possibility.
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Anemia is a result of blood loss and inflammation. The white blood cell (WBC) count in enteric or typhoid fever is often low. Leukocytosis is common in the first 10 days in children and may also result from bacteremia, localized infection, bowel perforation, or other extraintestinal complications.
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Neutropenia (noo-troe-PEE-nee-uh) occurs when you have too few neutrophils, a type of white blood cells. While all white blood cells help your body fight infections, neutrophils are important for fighting certain infections, especially those caused by bacteria.
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What does it mean if levels are low? Lymphocyte counts below the normal range can also be temporary. They can occur after a cold or another infection, or be caused by intense physical exercise, severe stress, or malnutrition. A low level can also be a sign of a condition known as lymphocytopenia or lymphopenia.
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As CLL becomes more advanced, the cancer cells can replace the bone marrow's normal blood-making cells, which can cause the marrow to produce fewer red cells, white cells and platelets with these results: A low number of red blood cells ( anemia ) can lead to feeling very tired, shortness of breath and pale skin.
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Pancytopenia is marked by low counts of all three types of blood cells—red cells, white cells and platelets. This condition can be caused by certain medications and by infections. In some cases, it is caused by a cancer or precancerous condition.
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['chronic infection.', 'mononucleosis.', 'leukemia.', 'viral infection, such as the mumps or measles.']
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Low white blood cell count. A low white blood cell count usually means your body isn't making enough white blood cells. It can increase your risk of all sorts of infections.
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The main causes of elevated white blood cells include: To fight a viral, fungal, bacterial, or parasitic infection. A negative reaction to a drug that triggers an immune and white blood cell response. Disease or malfunction that causes the bone marrow to overproduce white blood cells.
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Certain respiratory illnesses, such as a whooping cough or tuberculosis, may cause the levels of white blood cells to increase. In some cases, all white blood cells are affected. However, some people have a specific disease in which only one type of white blood cell is affected.
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When the white blood cell count is low, it is easier to get an infection and harder to get over it. If your child has sickle cell disease, her white blood cell count will usually be normal or higher than normal. However, illness and some medicines can make the white blood cell count go up or down for a short time.
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Decreased red blood cell production may be caused by primary bone marrow diseases (such as aplastic anemia or hematopoietic malignancy), kidney failure, toxins, or drugs such as phenylbutazone. Longterm debilitating diseases may also be associated with mild anemia.
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A low T cell count is more common than a high T cell count. Low T cell counts usually indicate problems with your immune system or lymph nodes. Low T cell counts may be due to: viral infections, such as influenza.
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["Infection. With a low white blood cell count and, in particular, a low level of neutrophils (neutropenia), a type of white blood cell that fights infection, you're at higher risk of developing an infection. ... ", 'Anemia. ... ', 'Bleeding.']