An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Concept Breadcrumbs

Preferred Term:

hay fever

Allergic rhinitis that occurs at the same time every year. It is characterized by acute conjunctivitis with lacrimation and itching, and regarded as an allergic condition triggered by specific allergens.
Concept Schemes:
Broader Concept:
Entry Terms:
  • hayfever
  • pollinosis
  • seasonal allergic rhinitis
  • pollen allergy
Download this Concept:
RDF/XMLCreated 2013-04-23, last modified 2019-11-26