Can You Get a Fever With Seasonal Allergies?


Seasonal allergies, though commonly known as hay fever, do not cause fevers. However, nasal congestion and other seasonal allergy symptoms can lead to infections, which may lead to raised temperatures.

Woman resting outdoors
Woman resting outdoors (Image: Digital Vision/Digital Vision/Getty Images)


Seasonal allergy symptoms include runny nose, itchy or watery eyes and nasal congestion.

Woman blowing nose
Woman blowing nose (Image: Pixland/Pixland/Getty Images)


Allergies are caused by the immune system overreacting to a harmless substance and producing histamines. Common triggers of seasonal allergies include pollen and mold.

Pollen on flower
Pollen on flower (Image: Jupiterimages/ Images)

Sinus Infections

Seasonal allergies do not cause fevers on their own, but chronic sinus congestion can lead to a bacterial sinus infection (sinusitis), which can cause fever—as well as symptoms such as nasal congestion, sinus pressure, headache and cough.

Woman with headache
Woman with headache (Image: Stockbyte/Stockbyte/Getty Images)


If what appears to be seasonal allergies causes general aches and pains, cough and sore throat, and a fever, it may actually be the common cold, a viral infection.

Man with head in hands
Man with head in hands (Image: Creatas Images/Creatas/Getty Images)


Treatment for seasonal allergies include antihistamines, decongestants and allergy shots. If you have a fever, consult your doctor, as you may need antibiotics to treat a sinus infection.

Woman talking to doctor
Woman talking to doctor (Image: Jochen Sands/Digital Vision/Getty Images)

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