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Leukocytosis is a medical condition characterized by an abnormally high number of white blood cells in the blood. White blood cells, also known as leukocytes, are a crucial part of the immune system, helping to fight off infections and diseases. In leukocytosis, the body produces too many of these cells, leading to an elevated white blood cell count.

Leukocytosis can be caused by various factors, including infections, inflammation, stress, and certain medications. It can also be a symptom of underlying conditions such as leukemia, lymphoma, or other types of cancer. In some cases, leukocytosis may be a normal response to an infection or injury, and the body's white blood cell count returns to normal once the infection or injury has resolved.

Leukocytosis can be diagnosed through a complete blood count (CBC) test, which measures the number of different types of blood cells, including white blood cells. The test can also provide information about the size and shape of the white blood cells, which can help to identify the cause of the condition.

Treatment for leukocytosis depends on the underlying cause. In some cases, no treatment may be necessary, as the condition may resolve on its own. In other cases, treatment may be aimed at addressing the underlying infection or condition. For example, antibiotics may be prescribed to treat a bacterial infection, while corticosteroids may be used to reduce inflammation. In cases where leukocytosis is caused by cancer, treatment may involve chemotherapy or radiation therapy.

Leukocytosis can be a serious condition, as an abnormally high number of white blood cells can crowd out other types of blood cells, leading to anemia or other complications. It is important to consult with a healthcare provider if you experience symptoms such as fever, fatigue, or persistent infections, as these may be signs of leukocytosis or another underlying condition.