V.2.3. Hematology
Systemic or local eosinophilia is a hallmark of fungal allergic diseases
(100). Eosinophils are readily counted and interpreted through a basic
white blood cell count. Blood eosinophilia, often defined as
> 500 elements/mm3 but sometimes at lower levels, e.g. 150
elements/mm3 (101), is an inconsistent marker of a predominantly type 2
response and atopic orientation, without specificity for ongoing
fungal-related atopic disease. It is subject to variations related to
comorbidities and ongoing treatments, especially corticosteroids (102).