The normal range of leukocyte count in adults is (4-10) × 109/L. When routine blood tests indicate that the leukocyte count is higher than 10 × 109/L, it is considered higher than normal and is called leukocytosis. The causes of high white blood cell count include the following two categories: 1. Physiological leukocytosis: a physiological reaction that can lead to transient leukocytosis after strenuous exercise or labor, during pregnancy and childbirth, or under severe cold or heat. The increase in leukocytes due to the above causes is low, and the number of leukocytes can return to normal after removing the adverse external environment.
2, pathological leukocytosis: leukocytes is a general term for a class of cells in the blood, including neutrophils, eosinophils, basophils, lymphocytes, etc. An increase in the number of any of these will lead to an increase in the total number of white blood cells. Acute infections caused by various germs such as pneumonia and appendicitis, serious tissue injuries such as major surgery and myocardial infarction, as well as leukemia and malignant tumors can lead to neutrophilia. Various viral infectious diseases such as chickenpox, hepatitis and recovery from certain infectious diseases can lead to an increase in the number of lymphocytes in patients. In addition, certain allergic diseases such as bronchial asthma, urticaria and parasitic infectious diseases are the causes of eosinophil elevation.
Therefore, the causes of elevated blood white blood cells include the above two categories, but this indicator alone cannot determine what kind of disease it is. When the white blood cell count is consistently higher than normal, prompt consultation should be made, combined with the patient’s medical history and relevant examinations and laboratory tests, to make a clear diagnosis and then provide timely and accurate treatment.