Mon, 30 Jun 2008 19:08:09 GMT

In-Depth From A.D.A.M. Diagnosis It is very difficult to diagnose chronic fatigue syndrome. Even experts do not have a clear definition of what chronic fatigue actually is or what mechanisms in the brain or nervous system are responsible for it.

Mon, 30 Jun 2008 19:06:33 GMT

Donna Flowers was once debilitated by chronic fatigue but has tamed her disease with exercise and treatment. For decades, people suffering from chronic fatigue syndrome have struggled to convince doctors, employers, friends and even family members that they were not imagining their debilitating symptoms.

Mon, 30 Jun 2008 19:06:43 GMT

Leonard Jason is a professor of psychology at DePaul University in Chicago and the director of the university’s Center for Community Research. He is on the Chronic Fatigue Syndrome Advisory Committee to the federal Department of Health and Human Services and is a board member of the International Association for CFS/ME, an advocacy group.