Abstract
The aim of this report is to describe a 3-year-old patient with global developmental delay, history of chronic malnutrition, broncho-obstructive syndrome and idiopathic hypereosinophilic síndrome of one year of evolution. The most common causes of eosinophilia are discarded: reactive (drug induced, inflammatory, allergic, infectious, neoplastic disorders, autoimmune, endocrinopathy disease) and familial or clonal eosinophilia. His corticosteroid dependence poses treatment challenges. Today the patient is under treatment with meprednisone 0.75 mg/kg/day associated with hydroxyurea 20 mg/kg/day with good evolution.
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