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Content: Signs of an infection or inflammation are likely the result of an elevated white blood cell count. Individuals with an immune disorder or certain types of cancer are also likely to experience abnormal white blood cell counts, both low and high. While feeling ill can be a sign of a high blood cell count, it’s also possible you will have no noticeable symptoms at all. An elevated WBC count in itself is not usually dangerous, but the causes of it can be if left untreated. On average, your body is naturally designed to produce white blood cells when needed and reduce them when you have regained normal health. What Is Indicated by a High WBC Count? There are multiple potential causes and indications of a high WBC count, which is why a complete blood count test is just one tool of many used by medical professionals to make accurate diagnoses and treatment plans. A high white blood cell countmay indicate: Infection, viral or bacterial
Inflammation, including rheumatoid arthritis
Immunosuppression
An immune disorder
Bone marrow disease (myelofibrosis)
An allergic reaction
A reaction to medication, such as epinephrine or corticosteroids
Cancer, such many forms of leukemia
Tuberculosis
Polycythemia vera
Whooping cough
Other causes of an elevated white blood cell count can be less severe, which may include smoking, injury, emotional stress, pregnancy, labor, or excessive exercise. Some individuals with a high WBC count number may have no identifiable cause, yet still experience serious symptoms.