CONCLUSION
The HES are a heterogeneous group of rare disorder characterized by the
sustained overproduction of eosinophils, in which eosinophilic
infiltration and mediator release result in multiple organs damage.
Cardiac involvement can cause significant morbidity and mortality.
Eosinophilic myocarditis is a rare initial presentation of HES. It poses
a diagnostic challenge since initial investigations are often
non-specific and other common causes of chest pain need to be ruled out.
However, in the setting of high clinical suspicion for eosinophilic
myocarditis and persistent peripheral eosinophilia, timely diagnosis and
treatment with steroids is imperative to avoid the catastrophic
consequence of irreversible fibrotic changes to the cardiac tissue.