Onset of chronic type is more than 2–4 weeks and acute one is less than 1 month. A history of atopy is found in 60 percent. Symptoms of idiopathic eosinophilic pneumonia include dyspnea, fever, cough, wheezing, sputum, myalgias.

• Chronic eosinophilia affects patients in their 30s or 40s.^[1]
• A history of atopy is found in 60 percent.
• Onset of chronic type is more than 2–4 weeks and acute one is less than 1 month.
• History of asthma with chronic type.
• Smoking history is more evident with the acute type.

Symptoms of idiopathic eosinophilic pneumonia include:^[2][3][4]

• Acute onset of dyspnea
• Fever that is usually moderate
• Cough
• Wheezing
• blood-tinged sputum
• pleuritic thoracic pain
• Myalgias
• Acute respiratory failure is frequent in the acute pneumonia and mechanical ventilation