Neutropenia is a pathological condition characterized by a decrease in the level of neutrophils below 1500 in 1 µl of peripheral blood. The causes can be various bacterial and viral infections, autoimmune disorders, medications. The level of neutrophils is examined in a general blood test. To correct this pathology, the underlying disease is treated. In severe neutropenia, drugs are used that stimulate the formation of bone marrow leukocytes.