Hello, my uncles is taking radiation treatment for prostate cancer, after some of his treatments he has fever, chills, body aches, today after his treatment he has been running a low temperature, having body aches in all of his joints and bones, nausea, headache and he is now having pain behind his eyes. When he asked the doctor about this last week, they stated that they thought he had a virus but it only lasted a few hours, today the symptoms are not going away, he has only been able to keep a sprite down. Please advise.