Eosinophilia is the state of having high eosinophil granulocytes in the blood. Normal ranges are between 0 and 0.5 10⁹ per litre of blood.

Diseases that feature eosinophilia:

• Parasitic infections
• Allergic disorders
• Some drug reactions
• In cholesterol emboli
• Churg-Strauss syndrome
• Some forms of chronic myeloid leukaemia
• Hodgkin's Disease

The release of interleukin 5 by T cells, mast cells and macrophages stimulates the production of eosinophils.

See also

• Eosinophilia-myalgia syndrome

Hematology