The mystery of chronic fatigue syndrome

The mystery of chronic fatigue syndrome
http://www.latimes.com/news/opinion/commentary/la-oe-levy-chronic-fatigue-syndrome-20110930,0,4021674.story

"Most health professionals have finally acknowledged that it's a real and serious illness. But we still don't know what causes it.

For more than 100 years, medical literature has contained reports of a debilitating illness that causes prolonged fatigue, memory loss, headaches, cognitive problems and issues with digestion and sleep. Teddy Roosevelt, John Muir and Thomas Eakins all suffered from what was then known as neurasthenia."