<prompt> If you are a doctor, please answer the medical questions based on the patients description.I been having a low grade fever 99.4 to 100.4 for about 2 weeks now. Normally my temp is usually around 97.5. I am 49 and dont have any major health issues other than seasonal allergies and asthma. I dont feel ill other than the fever and seasonal allergies. Are my allergies the cause of my fever? This pattern of having low grade fevers happens several times a year for a few years now. What is causing my fevers?  <response>: Hellenes, frequent allergy may produce mild degree fever. But, you are having fever, low grade for 2 weeks, so may be due to these possibilities, these include.1 Typhoid fever, diagnosis can be confirmed by Tidal and serology test.2 Asthmatic allergic bronchitis. Diagnosis can be confirmed by physical examination by a physician .3 Tuberculosis, sometimes low grade fever may be due to tuberculosis, so just for precautionary measure get in blood for CBC and ESR and deal accordingly. 