About EAD
What is an Eosinophil-Associated Disease (EAD)?
Eosinophils (pronounced ee-oh-sin-oh-fills) are a type of white blood cell that play a role in certain medical conditions and immune responses. When someone has too many eosinophils in their blood, tissues, organs, or digestive system, without another known cause, they may have an eosinophil-associated disease (EAD). In these conditions, eosinophils can build up and cause inflammation and tissue or organ damage.
There are different types of EADs, and diagnosis usually depends on where in the body the eosinophils are found and what symptoms a person has.
Eosinophilic diseases can significantly affect quality of life and often require ongoing monitoring and long-term management.
There are different types of EADs, and diagnosis usually depends on where in the body the eosinophils are found and what symptoms a person has.
Eosinophilic diseases can significantly affect quality of life and often require ongoing monitoring and long-term management.
eosinophils under a microscope
We are currently developing new pages for our website about the different types of EADs.
Useful Links
American Partnership for Eosinophilic Disorders (APFED) - What is an Eosinophil-Associated Disease?
EOS Aware - My EAD Stories
EOS Network - What is an Eosinophilic-Associated Disease?
Improving Care in Eosinophil-Associated Diseases: A Charter
Plain Language Summary of principles for improving the care of people with eosinophil-associated diseases
RARE Portal - Australia’s growing national resource for rare diseases
Page last modified: 17 December 2025