Allergic Disease


Please Note: This content is being updated or under review. This version is based on the best available evidence at the last updated date and remains available to guide practice in the interim.

Allergic Disease - Adults Background 

Note: In July 2017, allergy information found in other PEN allergy backgrounds and practice questions was added to this background as part of the updating process. The information is included at present, and the updating of this background is occurring. The updated background should be available in the near future.
Disease Etiology
Adult Food Allergy
In infants and young children, food allergy usually precedes aeroallergen hypersensitivity; primary sensitization is to ingested

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