What does it mean when the percentage of lymphocytes in whole blood is low?

In general, a low percentage of lymphocytes in whole blood may be caused by exposure to radiation, long-term use of glucocorticoid medications, acquired immunodeficiency syndrome (AIDS), or other reasons. Treatment should be directed according to the specific cause. Details are as follows:

1. Radiation exposure

Long-term engagement in certain occupations involving radiation can damage the body's immune system, leading to a decreased percentage of lymphocytes in the blood. It is recommended to wear protective radiation gear during work to reduce radiation exposure.

2. Long-term use of glucocorticoid medications

Prolonged use of glucocorticoids may lead to conditions such as Cushing's syndrome, induce or worsen gastric ulcers, and cause emotional excitability. Since glucocorticoids can kill and dissolve lymphocytes, they often result in a reduced percentage of lymphocytes in whole blood. Patients are advised to follow their doctor’s instructions regarding discontinuation or switching of medication; do not stop taking the medication on your own.

3. Acquired immunodeficiency syndrome (AIDS)

AIDS, short for acquired immunodeficiency syndrome, is caused by infection with the human immunodeficiency virus (HIV). It leads to reduced numbers and impaired function of B and T cells, resulting in a lower proportion of lymphocytes. Patients are prone to infections and have weakened immunity. As directed by a physician, antiviral drugs such as acyclovir capsules or isoprinosine tablets may be used to prevent viral infections.

Besides the above causes, a low lymphocyte percentage could also result from other conditions such as lymphocytopenia or leukemia. It is recommended that patients seek timely medical evaluation at a正规 hospital.