Eosinophilia complicated with venous thromboembolism: A case report.

Background: Eosinophilia is an increase of more than 0.5 × 10/L in the number of eosinophils; it is a systemic condition with an unknown etiology and is often accompanied by multiple impaired organ functions. The clinical manifestations of the disease are highly variable and diverse, rendering identification of the diagnosis challenging; hence, diagnosis and treatment are often delayed.