Xray- I think it depends on the doc. If I had a kid, or had mono, and still was extremely unwell after 2 months, I would go straight to a good I.D. doctor. I think some are prescribing valtrex for mono but it certainly isn't the norm. There is one doctor who thinks CFS is a prolonged mononucleosis syndrome and we still have the original EBV, or CMV, whatever. I don't think a trial of acyclovir or a tried and true and generally safe med such as would be a bad idea, but the doctors still aren't doing it. I mean they give valtrex for cold sores! And lifelong for genital herpes. I don't understand the logic of watching someone stay sick for 3 months, then 6 moths, then 1 year, then 3 years, then 10 year, etc...and not trying things. But we're at the mercy of the doctors we can find. P.S. Valtrex was tough on my G.I. system.