When patients presented with pulmonary symptoms with eosinophilia, the healthcare professional is recommended to consider acute eosinophilic pneumonia (AEP), chronic eosinophilic pneumonia (CEP), eosinophilic granulomatosis with polyangiitis (EGPA), and hyper-eosinophilic syndrome (HES) as a primary diagnosis. A provisional diagnosis of secondary pulmonary eosinophilia is done when known causes, such as allergic bronchopulmonary aspergillosis (ABPA), parasites, medications, radiation effects, and malignancies are suspected.
Because of the complex nature of the condition, it is important for physicians to understand the disease and the severity of PE.