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Syndrome reference sheet
Generated 12 Oct 2026
Pulmonology · Pulmonology / Eosinophilic lung disease

Loeffler syndrome

Also known as: Simple pulmonary eosinophilia

Transient pulmonary infiltrates with peripheral eosinophilia.

Medical specialty
Pulmonology
Subspecialty
Pulmonology / Eosinophilic lung disease
Sex & age distribution
Male: affected; Female: affected; Children: yes
Gene(s) involved
None recorded

Etiology & mechanism

Hypersensitivity response during larval lung migration or drug exposure.

Gene(s) involved (0)

No gene recorded.

Symptoms & signs (6)

cougheosinophiliafevermigratory infiltratesself-resolving coursewheeze
SyndromeScope — educational reference. Content is model-generated and not clinically verified; always confirm against OMIM, Orphanet and GeneReviews before clinical use.