13 doctors weighed in:
What are the differences between hay fever and flu?
13 doctors weighed in

Dr. Alex Martinez
Internal Medicine - Allergy
10 doctors agree
In brief: Fever, length
Hay fever (an allergic response to pollen) and flu (a viral infection) may have similar symptoms (sneezing, runny nose, congestion, headache, scratchy throat) but differ in important ways.
Allergies can last weeks but flu lasts 1-2 weeks. Allergies don't cause fever whereas flu can cause high temperature & chills. Of course, flu is contagious but allergies are not. Consult your doctor to be sure.

In brief: Fever, length
Hay fever (an allergic response to pollen) and flu (a viral infection) may have similar symptoms (sneezing, runny nose, congestion, headache, scratchy throat) but differ in important ways.
Allergies can last weeks but flu lasts 1-2 weeks. Allergies don't cause fever whereas flu can cause high temperature & chills. Of course, flu is contagious but allergies are not. Consult your doctor to be sure.
Dr. Alex Martinez
Dr. Alex Martinez
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Dr. Brian Novick
Internal Medicine - Allergy & Immunology
1 doctor agrees
In brief: Allergy vs infection
Hay fever is an allergy to substances in the air. Flu is due to a viral infection.

In brief: Allergy vs infection
Hay fever is an allergy to substances in the air. Flu is due to a viral infection.
Dr. Brian Novick
Dr. Brian Novick
Thank
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