Eosinophilia occurs when a large number of eosinophils are recruited to a specific site in your body or when the bone marrow produces too many eosinophils. This can be caused by a variety of factors, including: Parasitic and fungal diseases. Allergic reactions.

What conditions increase eosinophils?

Eosinophils are a type of disease-fighting white blood cell. This condition most often indicates a parasitic infection, an allergic reaction or cancer. You can have high levels of eosinophils in your blood (blood eosinophilia) or in tissues at the site of an infection or inflammation (tissue eosinophilia).

Is eosinophil count higher in the morning?

An analysis of the severe-asthma clinic cohort data revealed a significant time-of-day effect: sputum produced in the morning clinic contained a significantly higher percentage of sputum eosinophils than that produced in the afternoon clinic (morning sputum eosinophil percentage 1.25% [0.00–8.75%] vs.