Chronic fatigue syndrome, despite being commonly known as “yuppie flu,” is not restricted to any social class or occupational group, according to a report by the Royal Colleges of Physicians, Psychiatrists, and General Practitioners.
The report, written at the request of the chief medical officer, Kenneth Calman, aims to dispel some of the popular myths surrounding this controversial condition. It says that there is no convincing evidence that common viral infections cause the chronic fatigue syndrome, although 10% of those with Epstein-Barr virus develop the syndrome.
You can read the rest of this article here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2359076/pdf/bmj00562-0011.pdf
Source: Mulube M. Myths dispelled about chronic fatigue syndrome. BMJ. 1996 Oct 5;313(7061):839. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2359076/