Abnormal eosinophil count can have various causes, ranging in severity from 'worrying' to 'generally fatal'. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose abnormal eosinophil count, we could:
|Hay Fever||2%||Ruled out|
|Drug Side-Effects||1%||Ruled out|
|Hodgkin's Lymphoma||0%||Ruled out|
White blood Cells - Eosinophil Percentage [fraction]
Possible responses:→ Don't know
→ 0 to 6% [0.00-0.06] (normal)
→ 7 to 10% [0.07-0.10] (slightly elevated)
→ 11-20% [0.11-0.20] (elevated)
→ Over 20% [0.20] (high)
Hodgkin's lymphoma often causes severe eosinophilia.
Acute Eosinophilic Leukemia (AEL) is a rare subtype of acute myeloid leukemia in which most of the cells in the blood and marrow are eosinophilic cells. Chronic Eosinophilic Leukemia (CEL) is a disease in which too many eosinophils are made in the bone marrow.
As with Hodgkin's lymphoma, non-Hodgkin's lymphoma causes eosinophilia (elevated eosinophil levels), but to a lesser degree.