Will the lymphocyte count be higher during a cold examination?

During a cold check-up, lymphocytes may be elevated. Increased lymphocyte count is common in viral infections, and colds are often caused by rhinoviruses, coronaviruses, etc., which may lead to increased lymphocyte reactivity. Cold is an acute upper respiratory tract infection, mainly caused by virus invasion of the nasopharyngeal mucosa. After virus invasion, the immune system activates lymphocyte proliferation and differentiation, producing specific antibodies to neutralize the virus. The absolute value or percentage of lymphocytes in the blood routine examination may exceed the reference range, manifested as an increase in lymphocytes. This increase is usually transient and gradually returns to normal as the infection is controlled. Some patients may have a decrease in neutrophils or a mild increase in monocytes. In rare cases, the continuous and significant increase of lymphocytes requires vigilance against other causes. Infectious mononucleosis may result in an increase in atypical lymphocytes. Some blood system diseases such as chronic lymphocytic leukemia can also lead to a long-term increase in the absolute value of lymphocytes, but these conditions are often accompanied by signs such as splenomegaly and lymphadenopathy. Long term exposure to chemical toxins such as benzene or radiation exposure may also cause lymphocyte abnormalities.

During a cold, it is recommended to have sufficient rest, drink 1500-2000 ml of water every day, and choose digestible Congee and steamed eggs. Avoid intense exercise that puts a burden on the center of gravity and lungs. If the increase in lymphocytes is accompanied by symptoms such as persistent fever and swollen lymph nodes in the neck, or if the lymphocyte count does not decrease after recovery from a cold, further tests such as EB virus antibodies and peripheral blood smears are needed to determine the cause.