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An illness that's hard to live with – or define

Tuesday 8 March 2011

The Wall Street JournalFrom The Wall Street Journal:


An Illness That's Hard To Live With—Or Define

March 5, 2011

In 1990, after a bout with mononucleosis, I contracted chronic fatigue syndrome. For month after month, I felt as if I had the worst case of the flu, and I had little stamina to do even the most basic life activities. I had to leave my work as a psychology professor for a year and a half.

I was lucky to have a strong support system and an understanding work setting—something many other patients don't have—but I discovered just how mysterious and frustrating the illness is. I also realized how easy it is for people to confuse the experience of everyday tiredness with the incapacitating illness known as CFS.

Fatigue-related illnesses have periodically appeared over the past 150 years. Some have mistakenly compared CFS to what was called neurasthenia in the late 1800s—a condition that was thought to be caused by reading newspapers and, in the case of women, by education. But by the early 1900s, many physicians had concluded that neurasthenia was probably due to psychiatric conditions, and it was eventually discredited.

Clustered outbreaks of another fatiguing illness attracted attention in 1934 at the Los Angeles County Hospital, and then at a British hospital in 1955. Both outbreaks involved the hospitals' medical staffs. Some physicians believed both outbreaks might have been a version of polio. The exact cause still remains unknown.

In the late 1950s, Dr. Melvin Ramsay in the U.K. began using the term myalgic encephalomyelitis to describe an illness marked by muscle fatiguability after minimal exertion and symptoms involving the central nervous system, such as impaired memory and concentration. Patients often experience a sudden onset, and proponents believed there was a medical cause.

In the 1980s, in the Lake Tahoe region of Nevada, an epidemic of a debilitating disease occurred. Infectious disease physicians at the Centers for Disease Control later labeled the disorder chronic fatigue syndrome. Patients thought the name belittled the seriousness of the condition and argued that it placed too much emphasis on fatigue when the illness is also typified by severe symptoms such as memory loss. Some used the analogy that if bronchitis or emphysema were referred to as "chronic cough syndrome," those illnesses would be trivialized too.

Because of my experience with chronic fatigue syndrome, I decided to conduct my own research. In a 1999 study, my research team looked at the effect of the condition's name on a group of medical students and residents. We found that a more technical name is taken more seriously. We gave case studies of patients to the trainees, described the disease as chronic fatigue syndrome, Florence Nightingale disease or myalgic encephalopathy to different groups, and then asked the trainees about prognosis, illness cause and treatment. Those who were told the condition was called myalgic encephalopathy were much more likely to give the patient a poor prognosis and to attribute the illness to a medical cause. Many activist groups have now begun using other names for both their organizations and the illness, including myalgic encephalomyelitis and neuroendocrine immune disorder.

Another challenge has been defining the disease. In 1994, the research community began using what is called the Fukuda criteria to determine who is afflicted. But the criteria were too vague and opened the possibility that someone without the two core symptoms (extreme exhaustion following physical or mental activity lasting more than 24 hours, and persistent or recurring impairment in short-term memory or concentration) could still be defined as having chronic fatigue syndrome.

In 2005, the CDC revised the Fukuda criteria in an attempt to identify patients with more precision. My research team believes the new criteria are still too vague and could potentially include people with primary depression. This ambiguity over definitions has made it difficult for researchers to pinpoint a biological cause. When investigators compare very different samples, it is difficult, if not impossible, to replicate findings from one lab to another. And when consistent biological findings do not emerge, investigators might inappropriately conclude that CFS is only a psychiatric problem.

—Mr. Jason is a professor of psychology and director of the Center for Community Research at DePaul University.

Outbreaks of Fatigue-Related Illnesses


The above originally appeared here.



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