The severity of low white blood cell 3.4 needs to be decided according to the cause, if it is caused by medication or infection, it is not very serious, if it is caused by blood system disease, it is more serious, and further bone marrow examination is necessary .
Common causes of low white blood cells include drugs, viral infections and hematologic diseases.
1. Drugs: such as anti-tumor drugs, chloramphenicol and so on. Anti-tumor drugs such as cyclophosphamide, methotrexate, etc., in killing tumor cells at the same time, the body’s normal tissue cells are also damaged, leukopenia; chloramphenicol will inhibit the hematopoietic function of the bone marrow, resulting in leukopenia, generally stopping the drug for 2 weeks after the blood can be restored to normal.
2. Viral infections: some viral infections, such as influenza, viral hepatitis, etc., can cause transient leukopenia, characterized by self-limiting and transient leukopenia due to infections, once the infection is under control, the leukocytes will automatically return to normal.
3. Blood system diseases: such as aplastic anemia, myelofibrosis, myelodysplastic syndromes, etc., there will be a decrease in leukopenia, when combined with a decrease in other blood cells, such as erythropoiesis and thrombocytopenia, it is more serious. Further bone marrow examination may be needed.
There are other causes of low white blood cells, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.