Can Allergies Cause Fever or Is It Something Else? Allergies can cause sneezing, congestion, and tiredness, but fever usually signals a cold, flu, or infection. Learn how to tell what’s really causing your symptoms. Click to read: https://www.wiserxcard.com/can-allergies-cause-fever-or-is-it-something-else/ #allergies #fever #coldvsallergy #healthtips #allergyrelief #sinusinfection #wellness