A rear process that occurs in adults.

It is typically caused by an infection but may result from trauma or inhalation or from ingestion of caustic substances.

Patients have an aggressive course.

Patients are typically male.

Patient present with dyspnea, strider and edema of the epiglottis or aryepiglottic folds.

Elevated C reactive protein and hyperglycemia are typical.

Patient often have recurrent history of similar episodes.

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