Table 1.
Classification of neutropenia
| Type of neutropenia | Neutropenias |
| Congenital | Severe infantile agranulocytosis (Kostmann's syndrome) |
| Shwachman–Diamond–Oski syndrome | |
| Myelokathexis/neutropenia with tetraploid nuclei | |
| Cyclic neutropenia | |
| Chediak–Higashi syndrome | |
| Reticular dysgenesis | |
| Dyskeratosis congenita | |
| Acquired | Postinfectious neutropenia |
| Drug-induced neutropenia | |
| Complement activation (haemodialysis, leukapheresis, ARDS) | |
| Immune neutropenia | |
| Isoimmune neonatal neutropenia | |
| Alloimmune neutropenia (transfusion reaction) | |
| Autoimmune neutropenia – primary | |
| Benign of childhood | |
| Adult chronic form | |
| Autoimmune neutropenia – secondary | |
| Autoimmune diseases | |
| Large granular lymphocyte | |
| Other (see Table 3) | |
| Pure white cell aplasia | |
| Chronic idiopathic neutropenia | |
| Hypersplenism | |
| Nutritional deficiency (vitamin B12 or folate deficiency) | |
| Diseases affecting the bone marrow | |
| Postchemotherapy | |
| Aplastic anaemia | |
| Fanconi anaemia | |
| Myelodysplastic syndrome | |
| Acute and chronic leukaemia |
ARDS, acute respiratory distress syndrome.