The NIH study is focusing on people who came down with the disease after an infection, of any sort, within five years. That initial infection is long gone but maybe, the body’s normal reactions to illness went into a destructive tailspin. Nearly 500 patients have called seeking to enroll in NIH’s study that is putting a few dozen under the microscope, with a barrage of sophisticated tests few hospitals can offer under one roof. “The ignorance about the condition just vastly dwarfs what we know about it,” said Dr. Walter Koroshetz, director of NIH’s National Institute for Neurological Disorders and Stroke, which is leading the research.

Source: Patients push limits for clues to chronic fatigue syndrome – STAT