Can leukopenia cause fever?

Written by Yang Li

Endocrinology

Updated on September 17, 2024

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Leukopenia can lead to fever. White blood cells are the guardians of the human body, protecting it against external invasions such as infections. When white blood cells are decreased, the patient's resistance to infections can be significantly reduced, making them particularly susceptible to infections. This can lead to fever, as often seen in hematological patients with leukopenia who frequently experience fevers due to their chronic infection states. Therefore, when leukopenia is accompanied by fever, it is advisable to seek hospital treatment as soon as possible, as proactive infection management is crucial.

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Written by Li Lang Bo

Endocrinology

1min 6sec

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Is leukopenia severe?

The normal value of white blood cells in the human body is 4 to 10×10^9/L. White blood cells mainly consist of neutrophils and lymphocytes, along with some other types of eosinophilic and basophilic granulocytes. If the total white blood cell count decreases, generally falling below 4 to 10×10^9/L, it is referred to as leukopenia. Among these, neutrophils are the most related to the body's immune response. If neutrophils decrease to less than 1.5×10^9/L, it is defined as neutropenia, which is very serious. If neutropenia occurs, the resistance to infections is greatly lowered, making the body highly susceptible to various infections. Active treatment to increase white blood cells is necessary; otherwise, any infection may lead to severe conditions like septicemia and septic shock, which can even be life-threatening.

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Written by Liu Lei

Endocrinology

1min 24sec

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What causes leukopenia?

Leukopenia mainly has the following three causes: 1) Drugs; 2) Infections; 3) Diseases that cause disturbances in white blood cell production. Drugs primarily include antibiotics such as sulfonamide antibiotics and penicillin; anti-tuberculosis drugs like rifampicin and isoniazid; anti-thyroid drugs such as methimazole and propylthiouracil; antipyretic analgesics like aminopyrine, indomethacin, and ibuprofen; and antihistamines such as diphenhydramine. Additionally, most chemotherapy drugs can cause a decrease in white blood cells. Viral infections can lead to a decrease in white blood cells or severe bacterial infections, such as sepsis and septicemia, along with some chronic infections. Diseases that cause disturbances in the production of white blood cells mainly refer to certain hematological diseases, such as aplastic anemia or malignant tumors that invade the bone marrow and affect hematopoiesis. Furthermore, there are some less common causes of leukopenia, such as familial inheritance and granulocyte distribution disorders.

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Written by Yang Li

Endocrinology

57sec

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Why does pneumonia cause a decrease in white blood cells?

When the severity of pneumonia is very severe, there can also be a decrease in white blood cells, which often suggests a higher possibility of severe pneumonia. Additionally, another scenario is viral pneumonia, where a decrease in white blood cells can also occur due to viral infections. Furthermore, there are special cases of infection, such as tuberculosis or infections caused by Mycoplasma or Chlamydia, where the use of anti-infection medications might also lead to a decrease in white blood cells. Another situation is when a patient inherently has a low white blood cell count, leading to weakened immunity and subsequently contracting pneumonia. In such cases, white blood cell counts might also not be high. Hence, severe bacterial pneumonia and decreases in white blood cells are relatively common in viral infections.

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Written by Yang Li

Endocrinology

1min 1sec

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Does leukopenia lead to leukemia?

First of all, a concept to clarify: generally, leukemia is associated with a very high white blood cell count. So, does a decrease in white blood cells lead to leukemia? There is no direct causal relationship between the two. A reduction in white blood cells generally requires an analysis of its cause—whether it is due to a decline in hematopoietic function, a deficiency in raw materials, or an increase in destruction. These situations essentially involve issues in the production factory or where they are used. We cannot say that people with reduced white blood cells will not develop leukemia, nor can it be stated in that way. They may also, over a period, exhibit a reduction in white blood cells due to certain factors. So, if there are genes causing leukemia combined with other factors, leukemia might occur, but there is no direct causation between the two.

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Written by Tang Zhuo

Endocrinology

54sec

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What causes leukopenia?

When the white blood cell count in the surrounding blood continuously remains below 4.0*10^9/L, we call this condition leukopenia. Typical symptoms of leukopenia include dizziness, fatigue, limb soreness, reduced appetite, and listlessness, although some patients may not exhibit any obvious clinical symptoms. The causes of leukopenia are very complex and can be classified into two main categories: primary and secondary. Primary leukopenia refers to cases where the cause is unknown, while secondary leukopenia refers to cases potentially caused by acute infections or physical and chemical factors, or diseases of the hematopoietic system, connective tissue diseases, allergic diseases, or genetic diseases, all of which may lead to a reduction in white blood cells.