Dear Dr., My Mom is getting fever, and temp. Is between 99-100 F. This is happening since last 3 months. We have done several test such as CT scan of chest, PET scan, thyroid test, CBC, ESR, IGE LEVEL, urine test and it's culture test, X-ray for Chest PA view, Sinus, full Abdominal sonography, etc. Even then also reason for fever is not detected. Once she got UTI and she was admitted because Pus cells were 120-150 and it was treated. Even after 1 week of treatment she again getting fever 2mths