Hello Doctor, I am 26 years old man and currently i suffer unexplained fever.Let me talk about my fever. The facts is that, my temperature is 102 F and it s still inside even over 5 days. The temperature is especially rises up in the morning 4:00 am sleep time. I already met with local doctor but they assume it is flu also they give me medicating and injection. But amazingly I have only high fever and muscles pain and nothing else. Mean because there s no sneez, no headache, no cough, no difficult swallow, no throat swollen, no abdomenal pain, no difficult breathing. So, how can we learn that kind of fever and what will could be ? Regard, Hein Thu