Guide To The Types Of Leukocytosis

Lymphocytosis

Lymphocytosis is diagnosed when a complete blood test show lymphocyte levels are elevated. There are three main types of lymphocytes: T-cells, B-cells, and natural killer cells. Each of these cells has a different function in the immune system. Lymphocytosis is a common symptom of viral infections in children, as many infections are new to the young person’s body, and the immune system has to react strongly to combat them. It is also a symptom of certain viral infections such as mononucleosis and viral hepatitis. If the underlying cause is unclear, doctors may look at other white blood cell levels in a complete blood count to make a better diagnosis. For example, high lymphocyte levels with low neutrophil levels are associated with lymphoma.