Allergies themselves don't directly cause a fever. However, allergies can trigger symptoms that may lead to conditions that can cause a fever. For instance, allergies can cause sinus infections, which in turn can lead to a fever. Additionally, while allergies might share some symptoms with conditions like the flu or a cold, allergies are not the cause of fever in those cases.
For example, hay fever, also known as allergic rhinitis, is a common allergy that causes symptoms like sneezing and a runny nose. Despite the name, it's not related to hay and doesn't cause a fever.
However, allergies can trigger symptoms like congestion and inflammation that can be confused with a viral infection. If you have a fever alongside allergy symptoms, it's important to consult a doctor to determine the cause and receive proper treatment.
