Usually a high blood count means an increase in the number of white blood cells in the blood, suggesting the possible presence of acute inflammation, heavy metal toxicity, allergies, infections, and other diseases. Leukocytes include neutrophils, eosinophils, basophils, lymphocytes, monocytes, etc. There are some differences in the diseases represented by each type of elevation. 1. Neutrophil: It is the main type of white blood cell that increases in the early stage of acute inflammation and injury, and can be seen in acute and septic infections such as skin boils and carbuncles, tissue suppuration, bacterial pneumonia, appendicitis, sepsis, etc.; lead, mercury, and other heavy metal poisoning; myeloproliferative syndrome and other hematological disorders; malignant tumors, acute traumatic injuries, or hemorrhage. 2. Eosinophil: It is the cell that mainly increases when the body undergoes allergic and other allergic reactions or parasitic infections. It can be seen in allergic asthma or rash, parasitic infection, after radiation exposure, recovery from infectious diseases. 3. Lymphocytes: are the core of immune response, mostly seen in severe infections such as viruses, e.g. whooping cough, measles, rubella, viral hepatitis, etc. They are also elevated in some cases of lymphoma and leukemia. 4. Monocyte: it is the main cell in the late inflammation stage, and it has strong killing power against virus and tumor. Increase can be seen in tuberculosis, typhoid fever, malaria, some leukemia, etc. 5. Basophils: participate in the intrinsic immune process, and also participate in the anti-parasite immune response. It is recommended to go to the hospital in time to consult the doctor for a clear diagnosis and follow the doctor’s instructions to standardize the treatment after the blood abnormalities.