A low white blood cell count on a routine blood test is the first step to determine the cause and the treatment based on the degree of reduction.
Low white blood cells usually indicate a low immunity. If the low level is only slight and there are no other uncomfortable symptoms, and the other tests are normal, you can observe it for a while and gradually improve your immunity by diversifying your nutrition, exercising moderately, and getting enough sleep, etc. This condition does not require treatment and the white blood cell count can slowly return to normal.
The other type of low white blood cell is caused by medications, such as antipyretic drugs or sulfonamides after a cold or fever, which can also cause a decrease in white blood cells, and this can return to normal after stopping the medication.
In addition, a viral infection, such as a viral infection or influenza, can also lead to leukopenia, which can be treated with antiviral therapy.
If the decrease in white blood cells is severe and may be due to a blood disorder, such as leukemia, further tests should be performed to confirm the diagnosis and then treat the patient on a case-by-case basis.