Neutropenia is a hematological disorder characterized by an abnormally low number of neutrophil granulocytes (a type of white blood cell). Neutrophils usually make up 50-70% of circulating white blood cells and serve as the primary defence against infections by destroying bacteria in the blood. Hence, patients with neutropenia are more susceptible to bacterial infections and without prompt medical attention, the condition may become life-threatening. Neutropenia can be acute or chronic depending on the duration of the illness. A patient has chronic neutropenia if the condition lasts for greater than 3 months. It is sometimes used interchangeably with the term leukopenia. However, neutropenia is more properly considered a subset of leukopenia as a whole.

MedicineNet: Neutropenia - Presents the causes, normal and abnormal white blood cell counts, and conditions associated with the disorder.
Neutropenia OnLine - Register, become a member and participate in a forum about this disorder.
Neutropenia Support Association - An extensive look at this disorder with information about the blood, the causes, the different types, symptoms and the treatment.
Meta Description: [ Increasing the understanding of neutropenia by providing information and support for care givers, patients and their families. ]
Severe Chronic Neutropenia International Registry - A disease registry which was established in Australia, Canada, the European Community and the United States in March, 1994. Information for patients and families and health care providers.