Leukocytosis

Neutrophils are the most common type of white blood cell. They are the body’s first line of defense in fighting infection and viruses, and often signal other components of the immune system to respond to these foreign invaders.

Neutrophilia is a type of leukocytosis that affects neutrophils and is often associated with infections and inflammation from injuries and arthritis. Known causes of neutrophilia include:

Lymphocytes in your blood create T cells that directly destroy harmful invaders and B cells that produce antibodies to recognize these foreign cells if seen again by the immune system.

Lymphocytosis is an increased number of these types of cells. It is a common type of leukocytosis and is associated with both viral infections and leukemia. Known causes of lymphocytosis include:

Monocytes. These types of cells are larger and live longer than many white blood cells. They work to help to break down bacteria and remove cellular debris.

Monocytosis, which is uncommon, happens when there are a high number of these cells. Known causes of monocytosis include:

Eosinophils are white blood cells that attack parasites and react to inflammation.

An elevated number of these cells is Eosinophilia. Known causes of eosinophilia include:

Basophils are small cells that create a reaction when infectious agents invade your blood. These type of white blood cells secrete chemicals such as histamine, a marker of allergic disease, which help to control the body's immune response.

Basophilia, which is a rare condition is when there is a high level of these types of cells. It is associated with leukemia. Known causes of basophilia include:

Signs and Symptoms