What is pulmonary eosinophilia?
Pulmonary eosinophilia — also called Loffler's syndrome or pulmonary infiltrates with eosinophilia — is inflammation in one or more areas of the lungs likely due to an allergic reaction. In many cases, the cause of pulmonary eosinophilia can't be determined. But it may be due to certain medications, such as aspirin or some antibiotics. Rarely, it may be caused by a parasitic infection.
Pulmonary eosinophilia usually isn't serious. The main sign of this condition is a persistent cough. A doctor may make a diagnosis of pulmonary eosinophilia based on:
In most cases, pulmonary eosinophilia improves without treatment, typically within a few months. When needed, treatment may include corticosteroids. If the underlying cause of pulmonary eosinophilia is a reaction to a medication, discontinuing the medication usually resolves the problem.
A rare but serious complication of pulmonary eosinophilia is acute eosinophilic pneumonia (AEP), which may result in pulmonary failure. AEP occurs most often in people who smoke.
Last Updated: 06/05/2006
© 1998-2015 Mayo Foundation for Medical Education and Research (MFMER). All rights reserved. A single copy of these materials may be reprinted for noncommercial personal use only. "Mayo," "Mayo Clinic," "MayoClinic.com," "Mayo Clinic Health Information," "Reliable information for a healthier life" and the triple-shield Mayo logo are trademarks of Mayo Foundation for Medical Education and Research.
Terms and conditions of use