<human>: Hi, I am 50 yr old female I had mono last February and I have the same symptoms again. Low fever daily constant fatigue. is it possible that it has just returned. The Dr. couldn t do anything for it the last time should I make another appointment to see him.
<bot>: Greetings from Chat Doctor. Thanks for posting your query.  Fever and fatigue can be caused by any infection. Infection most commonly happens due to Virus or bacteria. Even MONO is a viral infection.  Among viral and bacterial infection, most of the viral infections are self limiting, means there will get cured by itself in 2-4 days. So my advice it to wait for 2-3 days, you can take Tylenol for fever, 