Toward a clearer diagnosis of chronic fatigue syndrome

Researchers at the RIKEN Center for Life Science Technologies, in collaboration with Osaka City University and Kansai University of Welfare Sciences, have used functional PET imaging to show that levels of neuroinflammation, or inflammation of the nervous system, are higher in patients with chronic fatigue syndrome than in healthy people.

Chronic fatigue syndrome, which is also known as myalgic encephalomyelitis, is a debilitating condition characterized by chronic, profound, and disabling fatigue. Unfortunately, the causes are not well understood.

Neuroinflammation — the inflammation of nerve cells — has been hypothesized to be a cause of the condition, but no clear evidence has been put forth to support this idea. Now, in this clinically important study, published in The Journal of Nuclear Medicine, the researchers found that indeed the levels of neuroinflammation markers are elevated in CFS/ME patients compared to the healthy controls.

The researchers performed PET scanning on nine people diagnosed with CFS/ME and ten healthy people, and asked them to complete a questionnaire describing their levels of fatigue, cognitive impairment, pain, and depression. For the PET scan they used a protein that is expressed by microglia and astrocyte cells, which are known to be active in neuroinflammation.

The researchers found that neuroinflammation is higher in CFS/ME patients than in healthy people. They also found that inflammation in certain areas of the brain — the cingulate cortex, hippocampus, amygdala, thalamus, midbrain, and pons — was elevated in a way that correlated with the symptoms, so that for instance, patients who reported impaired cognition tended to demonstrate neuroinflammation in the amygdala, which is known to be involved in cognition. This provides clear evidence of the association between neuroinflammation and the symptoms experienced by patients with CFS/ME.

Though the study was a small one, confirmation of the concept that PET scanning could be used as an objective test for CFS/ME could lead to better diagnosis and ultimately to the development of new therapies to provide relief to the many people around the world afflicted by this condition.

Dr. Yasuyoshi Watanabe, who led the study at RIKEN, stated, “We plan to continue research following this exciting discovery in order to develop objective tests for CFS/ME and ultimately ways to cure and prevent this debilitating disease.”

Journal Reference: Y. Nakatomi, K. Mizuno, A. Ishii, Y. Wada, M. Tanaka, S. Tazawa, K. Onoe, S. Fukuda, J. Kawabe, K. Takahashi, Y. Kataoka, S. Shiomi, K. Yamaguti, M. Inaba, H. Kuratsune, Y. Watanabe. Neuroinflammation in Patients with Chronic Fatigue Syndrome/Myalgic Encephalomyelitis: An 11C-(R)-PK11195 PET Study. Journal of Nuclear Medicine, 2014; DOI:10.2967/jnumed.113.131045

 

Source: RIKEN. “Toward a clearer diagnosis of chronic fatigue syndrome.” ScienceDaily. ScienceDaily, 4 April 2014. https://www.sciencedaily.com/releases/2014/04/140404085538.htm

 

Link between early menopause, chronic fatigue syndrome discovered

A newfound link between chronic fatigue syndrome (CFS) and early menopause was reported online today in Menopause, the journal of The North American Menopause Society (NAMS). This link, as well as links with other gynecologic problems and with pelvic pain, may help explain why CFS is two to four times more common in women than in men and is most prevalent in women in their 40s. Staying alert to these problems may also help healthcare providers take better care of women who may be at risk for CFS, say the authors of this population-based, case-control study.

Based on a long-term study of CFS and fatiguing illnesses in Georgia, this analysis from Centers for Disease Control scientists included 84 women with CFS and 73 healthy control women who completed detailed gynecologic history questionnaires. Striking differences emerged from the comparison between those groups.

The women with CFS were some 12 times more likely to have pelvic pain that wasn’t related to menstruation (such as pelvic floor dysfunction, interstitial cystitis/painful bladder syndrome or IC/PBS, and irritable bowel syndrome) than the control women. The women with CFS also reported excessive bleeding (74% vs 42%) much more often as well as significantly more bleeding between periods (49% vs 23%) and missing periods (38% vs 22%). In addition, they used hormones for purposes other than contraception (such as to treat irregular periods, menopausal symptoms or bone loss) much more often (57% vs 26%).

Also striking, most women with CFS–66%–had undergone at least one gynecologic surgery, compared with only 32% of controls, most commonly hysterectomy (55% versus 19%). Women with CFS underwent menopause early (at or before age 45) because of hysterectomy much more often (62% vs 33%). (Surgical menopause occurs immediately when both ovaries are removed at hysterectomy and often prematurely even when ovaries are preserved.) Bleeding as the reason for hysterectomy was significantly more common in the women with CFS. They also underwent natural menopause earlier, but the numbers were too small to show a significant difference.

Although CFS has previously been linked with pelvic pain and gynecologic conditions such as endometriosis, IC/PBS, polycystic ovaries, and menstrual abnormalities, this is the first study to show a link with early menopause. Sex hormone abnormalities or their early decrease or disappearance may underlie these links, and the authors called for more research to find out whether they do play a role in causing or perpetuating CFS in some women. But meanwhile, they emphasized, women’s healthcare providers need to stay alert for symptoms of CFS, such as sleep or memory problems, muscle and joint pain, and worse symptoms after exertion, developing in women who have these gynecologic or pelvic pain problems.

“CFS can take a tremendous toll on women’s lives at midlife and on our society and healthcare system. Being aware of the association of CFS and earlier menopause can help providers assist women in sorting out symptoms of CFS from symptoms of menopause,” says NAMS Executive Director Margery Gass, MD, NCMP. This paper also raises the chicken and egg question: Is early menopause the cause of later health problems or simply the result of earlier health problems not recognized as the cause of early menopause?

Journal Reference: Roumiana S. Boneva, Jin-Mann S. Lin, Elizabeth R. Unger. Early menopause and other gynecologic risk indicators for chronic fatigue syndrome in women. Menopause, 2015; 1 DOI: 10.1097/GME.0000000000000411

 

Source: The North American Menopause Society (NAMS). “Link between early menopause, chronic fatigue syndrome discovered.” ScienceDaily. ScienceDaily, 4 February 2015.  https://www.sciencedaily.com/releases/2015/02/150204075324.htm

 

Spinal fluid proteins distinguish Lyme disease from chronic fatigue syndrome

Patients who suffer from Neurologic Post Treatment Lyme disease (nPTLS) and those with the chronic fatigue syndrome report similar symptoms. However unique proteins discovered in spinal fluid can distinguish those two groups from one another and also from people in normal health, according to new research conducted by a team led by Steven E. Schutzer, MD, of the University of Medicine and Dentistry of New Jersey — New Jersey Medical School, and Richard D. Smith, Ph.D., of Pacific Northwest National Laboratory.

This finding, published in the journal PLoS ONE, also suggests that both conditions involve the central nervous system and that protein abnormalities in the central nervous system are causes and/or effects of both conditions.

The investigators analyzed spinal fluid from three groups of people. One group consisted of 43 patients who fulfilled the clinical criteria for chronic fatigue syndrome (CFS). The second group consisted of 25 patients who had been diagnosed with, and treated for, Lyme disease but did not completely recover. The third group consisted of 11 healthy control subjects. “Spinal fluid is like a liquid window to the brain,” says Dr. Schutzer. By studying the spinal fluid, the research team hoped to find abnormalities that could be used as markers of each condition and could lead to improvements in diagnosis and treatment.

Taking advantage of previously unavailable methods for detailed analysis of spinal fluid, the investigators analyzed the fluid by means of high powered mass spectrometry and special protein separation techniques. They found that each group had more than 2,500 detectable proteins. The research team discovered that there were 738 proteins that were identified only in CFS but not in either healthy normal controls or patients with nPTLS and 692 proteins found only in the nPTLS patients. Previously there had been no available candidate biomarkers to distinguish between the two syndromes, nor even strong evidence that the central nervous system is involved in those conditions.

This research represents the most comprehensive analysis of the complete CSF proteome (collection of proteins) to date for both Chronic Fatigue Syndrome and Neurologic Post Treatment Lyme disease (nPTLS). Prior to this study, many scientists believed that CFS was an umbrella category that included nPTLS. However these results call those previous suppositions into question.

According to Dr. Schutzer, spinal fluid proteins can likely be used as a marker of disease, and this study provides a starting point for research in that area. “One next step will be to find the best biomarkers that will give conclusive diagnostic results,” he says. “In addition, if a protein pathway is found to influence either disease, scientists could then develop treatments to target that particular pathway.”

“Newer techniques that are being developed by the team will allow researchers to dig even deeper and get more information for these and other neurologic diseases,” says Dr. Smith. “These exciting findings are the tip of our research iceberg”

Journal Reference: Steven E Schutzer, Thomas E Angel, Tao Liu, Athena A Schepmoes, Therese R Clauss, Joshua N Adkins, David G Camp, Bart K Holland, Jonas Bergquist, Patricia K Coyle, Richard D Smith, Brian A Fallon, Benjamin H Natelson. Distinct Cerebrospinal Fluid Proteomes Differentiate Post-Treatment Lyme Disease from Chronic Fatigue Syndrome. PLoS ONE, 23 Feb 2011 DOI: 10.1371/journal.pone.0017287

 

Source: Public Library of Science. “Spinal fluid proteins distinguish Lyme disease from chronic fatigue syndrome.” ScienceDaily. ScienceDaily, 23 February 2011. https://www.sciencedaily.com/releases/2011/02/110223171235.htm

 

Chronic Fatigue Syndrome Linked To Impaired Stress Response

Subtle alterations of a hormonal stress response system called the HPA axis may play a role in chronic fatigue syndrome, according to a study in the November/December issue of Psychosomatic Medicine.

A smoothly functioning hypothalamus-pituitary-adrenal, or HPA, axis helps the body remain stable under physiological and psychological stress through the actions of three hormones. First, the brain portion called the hypothalamus secretes a hormone that stimulates the pituitary gland to secrete a second hormone. This second hormone causes the adrenal glands to create cortisol.

Problems can occur at any point in this process and result in a variety of diseases. A research team led by Jens Gaab, Ph.D., of the Center for Psychobiological and Psychosomatic Research at the University of Trier in Trier, Germany; and the Institute of Psychology at the University of Zürich in Switzerland are proposing that chronic fatigue syndrome may be one of them.

Chronic fatigue syndrome is characterized by debilitating fatigue that can include including muscle aches, low-grade fever and sleep disturbances. Its cause is not understood.

Gaab and colleagues recruited approximately 40 study participants between the ages of 30 and 50. Half of the participants were chronic fatigue sufferers and the other half were healthy volunteers. All participants completed questionnaires measuring fatigue, depression and coping skills.

To examine the HPA axis in action, participants were given blood, cardiovascular and saliva tests before and after taking two stress tests. The first, a psychosocial stress test, involved preparing for a fake job interview and completing an arithmetic problem before an audience while under the impression they were being videotaped. The second test measured physical stress on a stationary bicycle.

Participants were also given a series of insulin injections known as the insulin tolerance test. “The ITT is considered the gold standard for testing the integrity of the entire HPA axis,” Gaab says.

The researchers found significantly lower response levels of one of the HPA hormones, called ACTH, among the chronic fatigue patients compared with the healthy volunteers, during both stress tests as well as the ITT test. In fact, the chronic fatigue patients had significantly lower levels of the hormone before the testing even began.

“These results suggest that on a central level, subtle dysregulations of the HPA axis exist” in chronic fatigue syndrome patients, Gaab says, adding that future studies should include repeated evaluation of the HPA axis over the course of the syndrome.

Gaab and colleagues note that the possible role of cortisol in chronic fatigue syndrome still merits investigation, as low doses of hydrocortisone have shown some positive results in chronic fatigue patients.

Source: Center For The Advancement Of Health. “Chronic Fatigue Syndrome Linked To Impaired Stress Response.” ScienceDaily. ScienceDaily, 27 November 2002. https://www.sciencedaily.com/releases/2002/11/021126202215.htm

Brain abnormalities found in chronic fatigue patients

An imaging study by Stanford University School of Medicine investigators has found distinct differences between the brains of patients with chronic fatigue syndrome and those of healthy people.

The findings could lead to more definitive diagnoses of the syndrome and may also point to an underlying mechanism in the disease process.

It’s not uncommon for CFS patients to face several mischaracterizations of their condition, or even suspicions of hypochondria, before receiving a diagnosis of CFS. The abnormalities identified in the study, to be published Oct. 29 in Radiology, may help to resolve those ambiguities, said lead author Michael Zeineh, MD, PhD, assistant professor of radiology.

“Using a trio of sophisticated imaging methodologies, we found that CFS patients’ brains diverge from those of healthy subjects in at least three distinct ways,” Zeineh said.

CFS affects between 1 million and 4 million individuals in the United States and millions more worldwide. Coming up with a more precise number of cases is tough because it’s difficult to actually diagnose the disease. While all CFS patients share a common symptom — crushing, unremitting fatigue that persists for six months or longer — the additional symptoms can vary from one patient to the next, and they often overlap with those of other conditions.

Scientific Challenge

“CFS is one of the greatest scientific and medical challenges of our time,” said the study’s senior author, Jose Montoya, MD, professor of infectious diseases and geographic medicine. “Its symptoms often include not only overwhelming fatigue but also joint and muscle pain, incapacitating headaches, food intolerance, sore throat, enlargement of the lymph nodes, gastrointestinal problems, abnormal blood-pressure and heart-rate events, and hypersensitivity to light, noise or other sensations.”

The combination of symptoms can devastate a patient’s life for 10, 20 or even 30 years, said Montoya, who has been following 200 CFS patients for several years in an effort to identify the syndrome’s underlying mechanisms. He hopes to accelerate the development of more-effective treatments than now exist. (A new Stanford Medicine magazine story describes the study in more detail.)

“In addition to potentially providing the CFS-specific diagnostic biomarker we’ve been desperately seeking for decades, these findings hold the promise of identifying the area or areas of the brain where the disease has hijacked the central nervous system,” Montoya said.

“If you don’t understand the disease, you’re throwing darts blindfolded,” said Zeineh. “We asked ourselves whether brain imaging could turn up something concrete that differs between CFS patients’ and healthy people’s brains. And, interestingly, it did.”

The Stanford investigators compared brain images of 15 CFS patients chosen from the group Montoya has been following to those of 14 age- and sex-matched healthy volunteers with no history of fatigue or other conditions causing symptoms similar to those of CFS.

Three Key Findings

The analysis yielded three noteworthy results, the researchers said. First, an MRI showed that overall white-matter content of CFS patients’ brains, compared with that of healthy subjects’ brains, was reduced. The term “white matter” largely denotes the long, cablelike nerve tracts carrying signals among broadly dispersed concentrations of “gray matter.” The latter areas specialize in processing information, and the former in conveying the information from one part of the brain to another.

That finding wasn’t entirely unexpected, Zeineh said. CFS is thought to involve chronic inflammation, quite possibly as a protracted immunological response to an as-yet unspecified viral infection. Inflammation, meanwhile, is known to take a particular toll on white matter.

But a second finding was entirely unexpected. Using an advanced imaging technique — diffusion-tensor imaging, which is especially suited to assessing the integrity of white matter — Zeineh and his colleagues identified a consistent abnormality in a particular part of a nerve tract in the right hemisphere of CFS patients’ brains. This tract, which connects two parts of the brain called the frontal lobe and temporal lobe, is called the right arcuate fasciculus, and in CFS patients it assumed an abnormal appearance.

Furthermore, there was a fairly strong correlation between the degree of abnormality in a CFS patient’s right arcuate fasciculus and the severity of the patient’s condition, as assessed by performance on a standard psychometric test used to evaluate fatigue.

Right vs. Left

Although the right arcuate fasciculus’s function is still somewhat mysterious, its counterpart in the brain’s left hemisphere has been extensively explored. The left arcuate fasciculus connects two critical language areas of the left side of the brain termed Wernicke’s and Broca’s areas, which are gray-matter structures several centimeters apart. These two structures are important to understanding and generating speech, respectively. Right-handed people almost always have language organized in this fashion exclusively in the left side of the brain, but the precise side (left or right) and location of speech production and comprehension are not so clear-cut in left-handed people. (It’s sometimes said that every left-hander’s brain is a natural experiment.) So, pooling left- and right-handed people’s brain images can be misleading. And, sure enough, the finding of an abnormality in the right arcuate fasciculus, pronounced among right-handers, was murky until the two left-handed patients and four left-handed control subjects’ images were exempted from the analysis.

Bolstering these observations was the third finding: a thickening of the gray matter at the two areas of the brain connected by the right arcuate fasciculus in CFS patients, compared with controls. Its correspondence with the observed abnormality in the white matter joining them makes it unlikely that the two were chance findings, Zeineh said.

Although these results were quite robust, he said, they will need to be confirmed. “This study was a start,” he said. “It shows us where to look.” The Stanford scientists are in the planning stages of a substantially larger study.

 

Source: Stanford University Medical Center. “Brain abnormalities found in chronic fatigue patients.” ScienceDaily. ScienceDaily, 29 October 2014.  https://www.sciencedaily.com/releases/2014/10/141029084118.htm

 

Do anorexia, irritable bowel syndrome, chronic fatigues share a common cause?

Irritable bowel syndrome, chronic fatigue syndrome and anorexia nervosa may all have a common origin according to researchers.

They speculate that all three disorders may be caused by antibodies to the body’s own nerve cells because of a mistake by the immune system following infection.

At the moment, the ultimate cause of these illnesses remains a mystery.

Writing in Medical Hypotheses, Dr Jim Morris from the University Hospitals of Morecambe Bay NHS Trust, Dr Sue Broughton and Dr Quenton Wessels from Lancaster University say current explanations are unsatisfactory.

“Psychological factors might be important, but are unconvincing as the primary or major cause.

“There might, for instance, be an increased incidence of physical and sexual abuse in childhood in those who go on to manifest functional disorders. It is easy to see how this could influence symptoms in adults but it stretches credulity to imagine abuse as the sole and sufficient cause of the functional disorder.”

It is already well known that women are more at increased risk of autoimmune disease especially ones in which antibodies to the body’s own cells are thought to play a role, like thyroid disease, pernicious anemia and myasthenia gravis.

The researchers said: “The female to male ratio in these conditions is of the order of 10. The female excess in Irritable Bowel Syndrome, Chronic Fatigue Syndrome and Anorexia Nervosa is equally extreme and therefore this fits with the idea that auto-antibodies to nerve cells could be part of the pathogenesis of these conditions.”

The formation of auto-antibodies is found mostly among women and increases with age, which could be why these disorders are more common in midlife. Even with anorexia, which reaches a peak at the age of 30, auto-antibodies have been found in the bodies of patients.

There are also links with infection in that the onset of IBS commonly follows an episode of infectious diarrhea while chronic fatigue syndrome can be triggered by infectious mononucleosis and viral hepatitis.

Even anorexia could be influenced by secretions from bacteria affecting the brain, triggering the production of antibodies which affect mood and motivation.

“Auto-antibodies acting on the (brain’s) limbic system could induce extremes of emotion including disgust and fear. These then become linked, in the minds of adolescent girls, to culturally determined ideas of what is, and what is not, the ideal body shape and size. It is then a small step for disgust and fear to be directed to food and obesity which the fashion industry currently demonizes.”

If their idea is proven, the researchers suggest that these disorders may be amenable to treatment using pooled immunoglobulin from the blood of healthy people, especially in severe cases of anorexia where life is threatened. It should also be possible to identify and eliminate from the gut the bacteria which are triggering auto-antibodies.

Journal Reference: J.A. Morris, S.J. Broughton, Q. Wessels. Microbes, molecular mimicry and molecules of mood and motivation. Medical Hypotheses, 2016; 87: 40 DOI:10.1016/j.mehy.2015.12.011

 

Source: Lancaster University. “Do anorexia, irritable bowel syndrome, chronic fatigues share a common cause?.” ScienceDaily. ScienceDaily, 25 April 2016. https://www.sciencedaily.com/releases/2016/04/160425100204.htm

 

Chronic fatigue syndrome: The male disorder that became a female disorder

Previously long-term fatigue was considered a male disorder caused by societal pressures. Today women comprise the majority of ME patients, and they feel that their condition is their own fault.

Throughout history some people have suffered from a lack of energy and long-term, physical fatigue. Today these symptoms are classified as myalgic encephalomyelitis (ME) or chronic fatigue syndrome (CFS).

It is commonly thought that chronic fatigue has mainly psychological causes and that it affects perfectionistic women who cannot live up to their own unreasonably high standards.

This has not always been the case. Just over 100 years ago it was primarily upper class men in intellectual professions who were affected. “Neurasthenia,” as the condition was called at the time, was a physical diagnosis with high status.

No longer legitimate

“The medical understanding of long-term fatigue has changed. Previously the condition was viewed as a typically male disorder; now it is perceived as a typically female disorder. The diagnosis of neurasthenia, which has a male connotation, was changed to the ME diagnosis, which has a female connotation,” explains Olaug S. Lian, a sociologist and professor at UiT The Arctic University of Norway.

Together with Hilde Bondevik of the University of Oslo, Lian has studied how the view of women and perceptions of the body, gender and femininity in two different historical periods have been manifested in the medical understanding of long-term chronic fatigue.

“Long-term fatigue was viewed as a legitimate disorder, a result of the heroic efforts of the upper class male. Today, it is a stigmatizing disorder, understood as an expression of women’s lack of ability to cope with their lives, a kind of breach of character,” says Lian.

Not only has the fatigued patient changed gender. Previously doctors believed that long-term fatigue was a neurological, physical disorder, while today it is categorized primarily as psychological in nature. And while in the past, society was thought to be the cause of the disorder, today the individual is supposedly to blame.

What happened to cause this change?

Upper class diagnosis

At the end of the 1800s neurasthenia was the most widespread diagnosis for long-term fatigue. Neurologists believed the condition was caused by a physical, neurological disease that affected the entire body, causing intense, long-term fatigue.

Although women were also diagnosed with the disorder, the typical patient was a man, and not just any kind of man. He was “civilized, refined, and educated, rather than of the barbarous and low-born and untrained,” according to neurologist George Beard.

Society was to blame

Doctors at the time believed that the cause of the disorder could be found in a rapidly changing society — urbanization, industrialization and women’s entry into working life.

Quite simply, modern civilization ran roughshod over the nervous system of upper class men, who were overstimulated by too much pressure and activity and too little sleep and rest.

“It was regarded as both legitimate and understandable that even the ‘great men’ could fall apart as a result of long-term, difficult intellectual work. It was viewed as positive that the body sent signals when the burden was too great. The body was viewed as an electrical fuse box and the thinking was that it was better for one fuse to burn out rather than for the house to catch on fire,” says Lian.

Different genders, different causes

The comments about the diagnosis also revealed past understandings of biological gender differences. Women could get neurasthenia from sexual frustration, while men could get it from excessive sexual activity, including masturbation.

Moreover, there was a connection between gender and class.

“To simplify a bit, we can say that it was mainly middle class men and working class women whose diagnosis of neurasthenia was explained by overwork. For working class men it was due to sexual escapades, and for middle class women the cause given was heredity or ‘women’s issues’,” explains Lian.

The fall of neurasthenia

Neurasthenia lost its popularity as a diagnosis in the early 1900s. One reason for this was that psychiatry became a medical field in its own right.

“Psychiatry took neurasthenia with it and changed its definition from a physical to a psychological condition. Since women were regarded as psychologically weaker and therefore more disposed to mental illness, the disorder became a female problem,” says Lian.

Fight over definitions

Today ME is the most common name for the disorder, defined as long-term, intense fatigue that cannot be directly linked to a well-defined illness and that does not disappear with rest. The condition is chronic, it cannot be cured with medical treatment and there is disagreement as to the cause.

“The lack of scientifically generated findings, medical explanations and effective treatment make ME a diagnosis with low status and low legitimacy within the medical community,” says Lian.

Currently the main theory is that ME results from an inability to handle stress and that perfectionistic people — the “good girls” — are especially at risk. The debate about how ME should be understood and explained is highly polarized, between those who believe that it is an illness caused by infections or vaccination and those who believe that ME has mainly psychological causes.

“I would like to see some humility about what we actually know about the disorder and not present value judgments as facts. Doctors must also be honest and acknowledge that we have very little hard-and-fast knowledge about this condition,” states Lian.

Blame and shame

The two historical periods have almost identical depictions of the phenomenon of long-term fatigue, although the names are different. But there is one important difference: the disorder is no longer regarded as a legitimate, anticipated outcome of overwork.

“Today the medical community is searching for explanations of ME at the individual level. The ME patient is depicted as a woman with five-star goals and four-star abilities — with character traits that make it hard for them to cope with their own lives,” says Lian.

“When the entire problem is seen as the patient’s fault, the person experiences blame and shame because it is the patient, not society, who is the cause of the illness. It is therefore the individual who is responsible for coping with the illness, such as by changing her own thought patterns,” says Lian.

Wrong kind of tired

She points out that the ability to cope with one’s own life is an important value in Western culture. Mental disorders, however, are associated with weakness. The current understanding of long-term fatigue is also linked to how we think about tiredness, according to Lian.

“There are strong norms for when you are allowed to be tired and worn out and how you are supposed to show tiredness in daily life. If you have been awake all night with a sick infant, you have a good reason to be tired at work. Other reasons are less legitimate. Workplace reports of absence never state that someone is at the psychologist, while it is completely acceptable to say that someone is at the dentist.”

“Being tired for the wrong reasons is seen as a sign of weakness, which must be overcome and hidden. It is in this context that we must understand the medical theories on a lack of coping ability and the objections of ME patients to these theories,” says Lian.

She believes such norms often make ME patients feel that the psychological explanation is a burden, although doctors do not necessarily mean for it to have this affect.

“What is it about the ME debate that makes the opposing sides so obstinate?”

“The doctors and patients talk past each other. The doctors think that an ME diagnosis is value neutral, but the patient hears ‘it’s my fault that I am sick and it’s my responsible to get better’. But although most people feel that mental disorders have lower value than somatic disorders, it is not a given that the doctors do,” says Lian.

Gendered explanation disappeared?

Although about three of four people who are diagnosed with ME today are women, the explicit, biology-based gendered explanations have disappeared from the debate, according to Lian.

“This may simply be because today we put greater focus on gender equality — which makes it less legitimate to claim that women are naturally inferior to men,” says Lian.

However, she believes that the ME diagnosis embodies a view of women that has long historical roots.

“The profile of the upper class woman from the 1800s who cannot cope with pressure and stress both inside and outside the home is still with us today,” says Lian.

Cultural bias

“How can your analysis contribute to the current debate about ME?”

“We show how the medical understanding of fatigue and lack of energy is impacted by the norms and values of society at large, for example, that medical knowledge reflects the view of women in our culture. Norms and values combine with biomedical knowledge in a way that makes it difficult to see what is what,” says Lian.

 

Source: KILDEN – Information Centre for Gender Research in Norway. (2014, February 20). Chronic fatigue syndrome: The male disorder that became a female disorder. ScienceDaily. Retrieved March 4, 2017 from https://www.sciencedaily.com/releases/2014/02/140220083145.htm

 

Diagnosing Chronic Fatigue? Check For Sinusitis

Washington, D.C. – A new study published in the August 11 issue of the Archives of Internal Medicine demonstrates a possible link between unexplained chronic fatigue and sinusitis, two conditions previously not associated with each other. Also newly noted was a relationship between sinusitis and unexplained body pain. These findings offer new hope to patients lacking a diagnosis and treatment for fatigue and pain.

Sinus disease is seldom considered as a cause of unexplained chronic fatigue or pain, despite recent ear, nose, and throat (otolaryngology) studies documenting significant fatigue and pain in patients with sinusitis and dramatic improvement after sinus surgery. A Harvard study showed that fatigue and pain scores of sinusitis patients were similar or worse than a group 20 years older with congestive heart failure, lung disease, or back pain.

“Chronic fatigue is a condition that frustrates both doctors and their patients since treatments directed at just the symptoms without knowing the cause are typically ineffective,” said Alexander C. Chester, M.D., clinical professor of medicine at Georgetown University Medical Center and principal investigator of the pilot study. “While sinusitis will not be the answer for everyone who comes to an internist with unexplained fatigue or pain, this study does suggest that it should be considered as part of a patient’s medical evaluation.”

Through his private internal medicine practice, Chester questioned 297 patients, noting unexplained chronic fatigue in 22%, unexplained chronic pain in 11%, and both in 9%. While these numbers are consistent with previous studies, Chester observed an unusual connection between patients with chronic pain or fatigue: prevalent sinus symptoms. Sinus symptoms were nine times more common on average in patients with unexplained chronic fatigue than the control group, and six times more common in patients with unexplained chronic pain. In addition, sinus symptoms were more common in patients with unexplained fatigue than in patients with fatigue explained by a mental or physical illness, suggesting the syndrome of unexplained fatigue is more closely associated with sinusitis than are other types of fatigue.

The CDC approximates that sinusitis affects 32 million Americans. Rates are highest among women and people living in the South. Women comprised 46% of the participants in this study, but represented 60% of the group with fatigue, predominance also noted in most prior studies.

15 out of the 65 patients in Chester’s study met criteria for chronic fatigue syndrome (CFS), a severe form of unexplained chronic fatigue associated with body pains and other symptoms. Most CFS patients had sinus symptoms and many noted a sudden onset of their illness, similar to people with sinusitis.

“We clearly need to do more research to see if sinus treatments alleviate fatigue and pain. This study does, however, offer hope for possible help in the future.” said Chester.

Georgetown University Medical Center is an internationally recognized academic medical center with a three-part mission of research, teaching and patient care (through our partnership with MedStar Health). Our mission is carried out with a strong emphasis on public service and a dedication to the Catholic, Jesuit principle of cura personalis–or “care of the whole person.” The Medical Center includes the School of Medicine and the School of Nursing and Health Studies, both nationally ranked, and the world renowned Lombardi Cancer Center.

 

Source: Georgetown University Medical Center. (2003, August 14). Diagnosing Chronic Fatigue? Check For Sinusitis. ScienceDaily. Retrieved March 4, 2017 from  https://www.sciencedaily.com/releases/2003/08/030814072847.htm

Chronic Fatigue Patients Show Lower Response To Placebos

Contrary to conventional wisdom, patients with chronic fatigue syndrome respond to placebos at a lower rate than people with many other illnesses, according to the first systematic review of the topic.

According to the new analysis by Dr. Hyong Jin Cho of King’s College London and colleagues, 19.6 percent of patients with chronic fatigue syndrome improved after receiving inactive treatments, compared with a widely accepted figure of about 30 percent for other conditions.

Because the placebo effect seems to be strongest in diseases with highly subjective symptoms, some medical professionals believed it could be as high as 50 percent among CFS patients.

The review, reported in the current issue of Psychosomatic Medicine, pooled data from 29 studies in which 1,016 people with CFS received various placebos.

CFS is a complex illness that has no known cause or cure. Myriad symptoms include severe malaise, muscle and joint pain, sleep and mood disturbances and headache. The symptoms continue for at least six months and cannot be explained by any other medical conditions. The Centers for Disease Control and Prevention estimate that as many as 500,000 Americans may have CFS or related conditions.

With so many mysteries surrounding CFS, a great deal of controversy exists among both doctors and patients as to whether its origins are primarily psychological or physiological. Current evidence suggests that emotional or social stresses such as bereavement or problems at work, combined with other triggers such as common viral infections, contribute to the disorder. Additional factors, such as avoidance of physical activity, may cause the symptoms to become chronic, says Cho.

The authors propose several possible explanations for the surprisingly low placebo response revealed in the analysis. Perhaps patients have low expectations due to the reality that CFS is very difficult to treat and often persists for many years. Alternatively, disconnects between how patients and doctors view the illness “may impede development of a collaborative therapeutic relationship,” reviewers suggest.

The study also showed that the placebo response is 24 percent for medical interventions but only 14 percent for psychiatric/psychological treatments. The authors say the reason may be that many CFS sufferers seen in specialist settings or self-help groups “have a firm conviction that their illness is of physical origin” and thus would have little faith in psychiatric/psychological treatments. This finding supports the idea that the placebo response is greatly influenced by patients’ expectations of improvement.

According to the review, behavioral therapy and graded exercise therapy have benefits, and if patients were more aware of them, says Cho, they might be “more open, more optimistic, and more collaborative with the professionals, and the overall outcome of the treatments could be enhanced.”

Dr. Lucinda Bateman, an internist who specializes in CFS and fibromyalgia and serves on the board of the American Association for Chronic Fatigue Syndrome, has worked with about 500 CFS patients over the past 15 years.

“In my clinical experience, I have found that CFS is among the most difficult conditions to improve at all, with either physical or psychological interventions.” This is true in part, she says, because there is a great deal of variation among patients diagnosed with CFS, and Bateman believes that ultimately CFS may be found to involve more than one disease.

In the absence of a cure, Bateman has found that the most effective treatment for CFS combines improving symptoms with medication, helping patients retain physical conditioning when possible and using psychological and psychiatric interventions to help patients adapt to living with chronic illness.

She doesn’t discount the placebo effect, however. “When you say to people, ‘I believe you, I will help you manage your symptoms, I will advocate for you,’ that hope and feeling of control over their disease could be considered placebo effect, but it’s an important part of delivering medical care.”‘

 

Source: Center For The Advancement Of Health. “Chronic Fatigue Patients Show Lower Response To Placebos.” ScienceDaily. ScienceDaily, 22 March 2005. https://www.sciencedaily.com/releases/2005/03/050322120639.htm

 

Hit-and-run Injury To The Brain: New Evidence On Chronic Fatigue Causation

Press Release: A seven-year tracking study has prompted scientists to suggest that chronic fatigue syndrome could be the result of brain injuries inflicted during the early stages of glandular fever.

Australian researchers have put the suggestion in this week’s Journal of Infectious Diseases, which reveals new findings from the ‘Dubbo Infection Outcomes Study’. Since 1999, a team led by UNSW Professor Andrew Lloyd have been tracking the long-term health of individuals infected with Epstein-Barr virus (EBV), Ross River virus (RRV) or Q fever infection. Their goal is to discover whether the post-infection fatigue syndrome that may affect up to 100,000 Australians is caused by the persistence of EBV, a weakened immune system, psychological vulnerability, or some combination of these.

Glandular fever — sometimes called ‘the kissing disease’ — is caused by Epstein-Barr virus (EBV). Transmitted via saliva, its acute symptoms include fever, sore throat, tiredness, and swollen lymph glands. Most patients recover within several weeks but one in ten young people will suffer prolonged symptoms, marked by fatigue. When these symptoms persist in disabling degree for six months or more, the illness may be diagnosed as chronic fatigue syndrome (CFS).

The researchers followed the course of illness among 39 people diagnosed with acute glandular fever. Eight patients developed a ‘post-infective fatigue syndrome’ lasting six months or longer, while the remaining 31 recovered uneventfully. Detailed studies of the activity of the Epstein-Barr virus in the blood and the immune response against the virus were conducted on blood samples collected from each individual over 12 months.

Commenting on the findings, Professor Lloyd says: “Our findings reveal that neither the virus nor an abnormal immune response explain the post-infective fatigue syndrome. We now suspect it’s more like a hit and run injury to the brain.

“We believe that the parts of the brain that control perception of fatigue and pain get damaged during the acute infection phase of glandular fever. If you’re still sick several weeks after infection, it seems that the symptoms aren’t being driven by the activity of the virus in body, it’s happening in the brain.”

The research team comprising scientists from the University of New South Wales, the University of Sydney and the Queensland Institute of Medical Research plan to test their ‘brain injury’ hypothesis by doing neurological tests on the study participants.

###

About the Dubbo Infection Outcomes Study: this is a major prospective cohort study following individuals from the time of onset of documented infection with Epstein-Barr virus (the cause of glandular fever), Ross River virus (the mosquito-borne infection which causes rash and joint pain) and Q fever (an infection common in meatworkers and those exposed to livestock).

Research Paper:
‘Prolonged illness after infectious mononucleosis is associated with altered immunity but not with increased viral load’, The Journal of Infectious Diseases, vol. 193 (2006), pp 664-671. Authors: Barbara Cameron, Mandvi Bharadwaj, Jacqueline Burrows, Chrysa Fazou, Denis Wakefield, Ian Hickie, Rosemary French, Rajiv Khanna, Andrew Lloyd.

Funding: The Dubbo Infection Outcomes Study is 82 per cent funded by the US Centers for Disease Control. It also receives funding from the National Health and Medical Research Council of Australia.

 

Source: University of New South Wales. “Hit-and-run Injury To The Brain: New Evidence On Chronic Fatigue Causation.” ScienceDaily. ScienceDaily, 1 March 2006. https://www.sciencedaily.com/releases/2006/03/060301092926.htm