Table 1

Causes of neutropenia

XLA, X linked agammaglobulinaemia.
Transient
Chronic
(1) Congenital neutropenias
Failure of production (bone marrow)
Severe chronic neutropenia
Cyclic neutropenia
Reticular dysgenesis
(2) Associated with syndromes
Primary immunodefeciencies: XLA, hyper-IgM
Glycogen storage disease (1b)
Shwachman diamond syndrome
Cardioskeletal myopathy
Onychotrichodysplasia
Antibody mediated neutropenias
Autoimmune neutropenia of infancy
Alloimmune neonatal neutropenia
Neonatal neutropenia owing to autoimmune disease in mother
Autoimmune neutropenia seen in association with primary specific immunodeficiencies
Idiopathic
Chronic benign neutropenia