No: By themselves, allergies don't cause fever. Getting a secondary acute infection of the sinuses due to congestion and blockage of the nose and nasal passages may lead to fever.
Answered 6/10/2015
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On occasion: Not common, but uncontrolled allergies can sometimes cause symptoms like weakness, fatigue and low grade fever. Seasonal allergies are also called "hay fever.".
Answered 4/12/2020
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