The normal range of peripheral blood leukocyte count in adults is (4-10) × 109/L. When the leukocyte count is consistently higher than 10 × 109/L it is considered higher than normal and is called leukocytosis. Leukocytes include neutrophils, eosinophils, basophils, lymphocytes, etc. There are many causes of leukocyte elevation, mainly the following two categories: 1. Physiological leukocytosis: physiological reactions that can lead to neutrophilia after strenuous exercise or labor, during pregnancy and childbirth, or under severe cold or heat. In addition, the lymphocytes in the body during infancy and early childhood will also be higher than normal.
2, pathological leukocytosis: acute infections caused by various germs such as pneumonia, appendicitis, etc., serious tissue damage such as major surgery, myocardial infarction, etc. can cause neutrophil increase, leukemia, malignant tumors, etc. can start leukocyte increase. Various viral infectious diseases such as chickenpox, hepatitis and certain infectious diseases can increase lymphocytes in the acute stage and lead to an increase in the number of monocytes in patients during the recovery period. In addition, certain allergic diseases such as bronchial asthma, urticaria and parasitic infectious diseases are the causes of elevated eosinophils.
Therefore, there are two main types of causes of elevated leukocytes. When laboratory tests indicate that the number of leukocytes is persistently higher than normal, you should promptly consult a doctor, improve systematic and formal examination and laboratory tests, and actively treat the patient in a timely manner after a clear diagnosis.