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What are the two types of hay fever?

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There are two types of hay fever (also known as allergic rhinitis). Seasonal hay fever only happens during the time of year when certain plants pollinate. Perennial hay fever happens all year. Nonallergic rhinitis shares symptoms with hay fever but its causes vary from odors and irritants in the air to chronic health conditions. 

SOURCES: 

News release, Sanofi-aventis U.S. 

Golightly L. . 2005. Drugs

Taramarcaz P. , December, 2004.  Clinical and Experimental Allergy

laiss M. , November 2004.  Clinical Therapy

Berger W. 2004.  Paediatric Drugs,

Huggins, J. , August 15, 2004.  American Family Physician

Bousquet J. , 2004.  Allergy

Incaudo, G. , October 2004.  Clinical Review of Allergy Immunology

Wilsom, A. , March 1, 2004.   American Journal of Medicine

MedlinePlus Medical Encyclopedia: “Hay Fever.” 

MedlinePlus Medical Encyclopedia: "Allergy."

Reviewed by Sabrina Felson on May 15, 2019

SOURCES: 

News release, Sanofi-aventis U.S. 

Golightly L. . 2005. Drugs

Taramarcaz P. , December, 2004.  Clinical and Experimental Allergy

laiss M. , November 2004.  Clinical Therapy

Berger W. 2004.  Paediatric Drugs,

Huggins, J. , August 15, 2004.  American Family Physician

Bousquet J. , 2004.  Allergy

Incaudo, G. , October 2004.  Clinical Review of Allergy Immunology

Wilsom, A. , March 1, 2004.   American Journal of Medicine

MedlinePlus Medical Encyclopedia: “Hay Fever.” 

MedlinePlus Medical Encyclopedia: "Allergy."

Reviewed by Sabrina Felson on May 15, 2019

NEXT QUESTION:

What are you allergic to if you have seasonal hay fever?

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