“THE PRIVATE DETECTIVE”

by Dr. David Bell

This is the case history of a man on disability with ME/CFS who was shadowed by a detective documenting his brief daily moments of reduced fatigue as proof of fraud. It is excerpted from Dr. Bell’s book, Faces of CFS – Case Histories of Chronic Fatigue Syndrome, published in August, 2000. “The Private Detective” illustrates one aspect of cases he has followed since the mid-1980’s. 

Reprinted with the kind permission of Prohealth: 11/9/11

THE PRIVATE DETECTIVE

“Much of the present confusion about CFS is probably generated by the characteristic spurt of increased energy patients experience for extremely brief periods, during the frequently years-long course of their illness.”

Many who suffer from CFS experience a period of relief at some point in their day. The most severe symptoms seem to ease, and a window opens through which a few rays of sunlight pour into their life.

During this period, patients are able to undertake some of the activities that are ordinarily too difficult to manage. For an unlucky few, the shades are drawn and no window exists, or it is very short.

But the majority of people with CFS will have one, two, maybe even three, hours during which the window opens, and activity is possible, before total disability claims them again, stealing hope for at least another day.

This “window” of activity is such a common feature of CFS, I have found that I can actually grade the severity of a patient’s case based on the degree of energy a patient experiences during this window. In fact, I believe that its duration on any given day, over a period of months, can predict the likelihood of recovery from CFS.

CFS patients are as impatient as anyone else would be in the same predicament. They have job commitments to fulfill, families to nurture, life to live. When the ravages of the illness wipe out the majority of time available to them each day, they struggle to make the most of their hour or two of improved health.

Most CFS sufferers live for this window of time, and typically they will try to accomplish as much as possible when it opens, even though they have learned through experience that any exertion will make them feel even worse when the window closes again. Nevertheless, I have observed that most patients prefer to fly for two hours and then “crash and burn” afterward rather than stay within the confines of the hangar.

Eventually, this precious window becomes their life, but their exploitation of it can be dangerous – although not necessarily dangerous to their health. It certainly got Richard Watkins in a lot of trouble.

Richard was destined to be a Lyndonville lifer, constrained by either fate or good fortune to experience life in the comfort of upstate New York. While some young people curse such a fate, and compare it to being born in the Third World, Richard accepted it gracefully and thrived in the rural atmosphere.

In high school, he struggled with Mrs. Carson’s English class, but excelled in Mr. Osgood’s science class. It helped that Mr. Osgood was also the basketball coach. Richard was competitive and had the good fortune to be tall and very strong. It was rumored that Richard’s science grades would have been somewhat less stellar had his athletic prowess been less remarkable.

Richard lived for baseball in the summer and basketball in the winter, as did most of his friends. School work was the obligatory drudgery that afforded him his time on the field or the court.

Perhaps not surprisingly, college was a disappointment; academic knowledge for its own sake made little sense to Richard. Eager to get on with life, he paid scant attention to his advisors’ counsel to carefully lay out a plan for the next several decades. Instead, he fell in love, married a bright, beautiful girl from a nearby town, and jumped at the first good job he could find: a post at Rochester Plastics.

The job required hard labor, but it also promised opportunities for advancement into management over time. Richard’s life was not merely perfect, it was fun.

Then, four years after he began work at Rochester Plastics, he developed CFS. One day he caught the flu. It seemed like your ordinary garden variety flu, probably the same one his cousin and wife had caught at the same time.

Richard didn’t even come to see me to seek treatment for his fever, chills, sore throat, and aching muscles. He knew what I would say: “Aspirin, fluids, and bed rest.” (I hate it when people know what I am going to say, but they are usually correct.)

Anyway, Richard felt he could take a few days off to recover; his work record was perfect.

Curiously, this flu failed to resolve in the expected week’s time. Two weeks later, I ordered the routine blood tests, all the while not really expecting to find any dramatic abnormality, and I prescribed an antibiotic. I thought the flu might have turned intoa sinus infection.

The fever subsided, the chills and sore throat receded to the background, but the exhaustion grew more intense. In addition, headaches and stomach pain joined muscle and joint pain, and he developed an intense sensitivity to bright light.

I felt it was time to take a harder look. I ordered more tests: Mono, unusual infections like Cytomegalovirus and parvovirus, and tests for thyroid inflammation or new onset arthritis. The tests all came back as “normal.”

Two months later, I was very concerned. Richard had been a vigorous, healthy young man; he should have bounced back by then. After assuring him I was only doing my job, I inquired about HIV infection risk factors, and urged him to sign on the dotted line, permitting me to order a test for AIDS. Richard signed, but that test was negative, too. Perhaps, the problem was heavy metal poisoning, I mused; after all, he worked with nasty chemicals on the job site. Again, the tests were negative. I wondered if he had been affected by insecticide sprays from the nearby farm fields, but no evidence of poisoning turned up.

Finally, I sent him to the real doctors in the city.

After six months, hundreds of tests, and three doctors, someone said Richard probably had Epstein-Barr. Richard thought Epstein-Barr was Epstein’s Bar, some long-forgotten roadside joint where he might have picked up food poisoning, or worse. 

I explained that Epstein-Barr was the virus known to cause infectious mononucleosis, but I had my doubts about the diagnosis. Richard’s antibody levels to the virus, one measure of a person’s degree of infection, didn’t seem very high to me.

Still, at least mono was a diagnosis, and that was necessary now. It is hard for a patient to be sick. It is harder still to feel ill and not know what is causing the illness. The added stress and anxiety increase discomfort.

Naturally, a patient’s thoughts turn to cancer, most people have heard of a relative in whom a cancer lingered without being found. With these thoughts, fear begins to grow, and discomfort increases dramatically. The doctor will reassure the patient that it is not cancer, but this is hardly comforting since the doctor has no idea of what is causing the illness in the first place. Actually, the problem with cancer is that it is usually silent in the first stages, which is why it is so difficult to find.

Whatever was causing Richard’s illness was not silent, it screamed many symptoms

With the diagnosis of mono, Richard was still ill, but he could relax. “It” had a name. It was a wrong name, granted, but at least it allowed him to recognize the enemy. He could begin to separate what was due to his own fear and what was due to illness.

Over the next few months, other tests on Epstein Barr virus were run, as it had become clear that this was not the typical mono that would resolve in six weeks. Eventually, the diagnosis was changed to chronic fatigue syndrome, CFS.An entire year passed, a year during which Richard was unable to go to work at Rochester Plastics.

The early flu-like symptoms had remained remarkably constant, but he had new ones, too. He had difficulty concentrating – a sensation he described as a kind of “brain fog,” and numbness and tingling sensations in his arms and legs. Those symptoms came and went, but one symptom was intractable: crushing fatigue.

It was not tiredness, not even exhaustion. It was the sick exhaustion of the flu. He would attempt to get up from his bed and move around, even go to work for a day or two, but the fatigue would end up knocking him flat again.

Eventually, Rochester Plastics put him on short-term disability leave. Every month, I sent a slip to Rochester Plastics promising the company that Richard would be back to work soon, hoping for the best. All those broken promises led Richard just one place: long term disability leave.

Richard spent his days lying on his couch, watching TV, and talking on the phone. For him, the unbidden lassitude was torture. There would be no summer softball league, no deer hunting in the fall, no winter basketball in the gym.

Inevitably, whenever Richard tried to shake himself out of his confinement and try to play a sport, the result was always the same:

• He would be flattened,
• And with even more muscle pain and exhaustion than before.

Two years passed. Richard’s symptoms weren’t getting any worse, and some of them were even beginning to slack off.

In my efforts to help, I had prescribed antibiotics, antidepressants, and stimulants. Richard himself explored every conceivable homeopathic option, without appreciable results. I was unable to persuade myself that any of the medications I had prescribed had made a difference, either. It seemed to me that Richard was beginning to get better on his own.

By then, his level of activity during any given day hovered at around 40% of what would have been normal for him. At the start of his illness, I measured Richard’s activity level at about 20%.

Defining a person’s activity level in a scientific manner can be complicated, but not impossible. In 1988, two researchers performed a study in which they asked subjects to keep a detailed daily diary in order to calculate the amount of energy expended for every activity. There is a small amount of energy expended for sleep, more for playing the piano, still more for swimming.

Using their method, I might have calculated scientifically Richard’s daily caloric expenditure and come to some highly specific conclusions about his activity levels. But the method is tedious, and I have found CFS patients to be highly accurate and consistent in their estimation of the daily activities pre- and post-CFS. It has always turned out that their own estimates are just as good as the time consuming scientific measures. Not as fancy, but as reliable over the long term.

In the day’s early hours, Richard was rarely able to do more than brush his teeth or drink some juice. His mornings were spent on the couch. “ I have been eaten by the couch,” he would say. Of course, he wanted to be active every day – but his body refused to respond to his will.

Except at two in the afternoon. It was the time when dead muscles seemed to come to life and his brain cleared a little, the period when he did not feel, in his own words, “like a bag of garbage.” Some invisible infusion of energy got him up and moving around his house, at first tentatively.

An hour or two later, he would say, “The plug has been pulled.

He could feel the exact moment when the energy source was cut. When I evaluate CFS patients for their degree of activity over periods of weeks and months, it is apparent to me that they are afforded a relatively constant amount of time each day during which they can stand, walk, and function in a fairly normal manner. Over the short term, however, say over two days, there can often be a surprising degree of fluctuation.

Much of the present confusion about CFS is probably generated by this characteristic spurt of increased energy patients experience for extremely brief periods during the frequently years-long course of their illness.

In our culture, which rarely examines the day to day reality of chronic (as opposed to acute) disease, you are either sick, or you are well.

There can be no fluctuation, no middle ground. If your neighbor sees you at the grocery store:
• She assumes you’re always well enough to shop;
• She doesn’t celebrate the fact that you have managed to dress, put the car into gear, and find your way to the dairy case;<br />
• Nor does she rue the fact that when you return home, you may lack the strength to take the groceries out of their bags and put them away.
• The matter is beyond her realm of experience and education.

By the time Richard had been ill for two years, and he had begun to feel well enough in the early afternoons for an hour or two of activity, he was eager to go out into the world.

When you have only about 20% of your normal energy level most of the time, an hour or two at 80% seems very good indeed.

Of course, despite his long illness, Richard looked completely normal to casual observers, and when neighbors noticed him outside his house, they assumed he had recovered fully.

His wife Jamie, in contrast, knew Richard well enough to notice consistent changes in skin tone and facial expression that heralded the moment when Richard’s energy would drain out of him. She described a lifeless expression in his eyes and a gray skin pallor, a color that was almost corpse-like.

These changes were too subtle for me to see, but Jamie, like most spouses who know their partners well, was a good observer. I wondered if these marked changes in expression and skin tone would offer insights into the disease itself.

Richard encountered the kind of resistance faced by every CFS sufferer when he tried to obtain full-time disability support from his company.

By then, CFS had become a controversial illness, even a notorious one. One side of the debate held that sufferers were either hypochondriacs, neurotics, or scam artists.

Perhaps not surprisingly, Richard’s company was reluctant to help. I vouched for Richard’s honesty and the severity of his illness, but I found it difficult to answer many of the questions posed by the company’s disability forms; they simply weren’t designed for a disease as complex as CFS.

Most disabilities are fixed or immutable, involving the loss of function of an eye or limb. A typical disability form will ask the doctor, “How many pounds can applicant lift with left hand?”

Technically, Richard could still lift 40 pounds. He was not confined to a wheelchair, he did not limp, nor was he blind or deaf. He was none of those things, but he couldn’t have worked an eight-hour day if his life depended on it.

In contrast to Richard’s day-to-day health status, the disability forms from Rochester Plastics were inflexible. At a loss, I finally wrote in the bottom margin, “Mr. Watkins is unable to sustain productive activity for more than three hours a day because of fatigue.”

My effort on Richard’s behalf seemed to help a bit. Rochester Plastics maintained Richard’s disability benefits at least for the time being. But the company was far from happy. In fact, Richard’s superiors were certain they were being ‘had.’

By the beginning of his third year of CFS, Richard began to improve significantly. The array of symptoms remained unchanged; they were simply less severe.

His ability to participate in the daily life of his household was expanding. He now experienced several hours each day, instead of one or two, when he could take a walk, go shopping, and generally feel as if he were a member of the human race once again.

I have always encouraged patients to take full advantage of these fleeting hours of better energy. To this day, I remain uncertain as to whether the increased movement actually stimulates improvement in some way, or whether a patient’s ability to function for some portion of a day is a hallmark of spontaneous improvement.

As I typically do with all CFS patients, I encouraged Richard to be as active as possible, whenever he could. For him just being able to go outdoors was a sign that he was not really dying, and might actually be getting better; if nothing else, it was important to his mental health.

Some people read books, some people watch television. Before his illness began, basketball had been Richard’s life, an essential ingredient of his existence. It’s fair to say he lived on air, water, food, and basketball. And when Richard started getting significantly better in his third year of illness, throwing hoops was the first thing he attempted in those early afternoon hours of heightened energy.

A friend installed a ramp under the basket in Richard’s driveway so that the ball would roll back toward Richard after he threw it, saving him a few extra steps. Richard would stand 10 feet from the basket, aim, and put the ball through. Most of the time, the ball bounced right back to him; he didn’t even have to move.

In this way, he could shoot hoops for longer periods. Occasionally, after a miss, he would jog over and pick up the ball. On such days, in his imagination, he was taking a buzzer shot for the New York Knicks in a tie game with the Celtics, and the crowds at Madison Square Garden were going wild.

Then he would walk back into his house and crash on his couch for three hours.

As the months passed, Richard slowly improved. He measured his gains by the strength of his shooting arm, the number of baskets he made in a row, and the total number of minutes he could actually shoot hoops. He had even begun taking some shots from the three point line.

There was no doubt that he was getting better. The hoop play was exercise and psychotherapy combined. No medicine I could prescribe would help his physical and mental health like basketball.

That summer in upstate New York had been a beautiful one. It stays light in the evenings until nearly nine in the evening. The wind coming off Lake Ontario was cool and pleasant after work and, like Richard, I loved to play basketball. I am a Celtics fan. I could happily abandon nearly everything else about Boston, but not the Celtics.

After a day in my Lyndonville clinic, I would sometimes stop by Richard’s house and we would play one-on-one. Even if our game lasted just 10 minutes, it was always exciting. The former athlete, still hobbled by CFS, and I were a pretty even match. We played like 14-year-olds, but in slow motion. Not uncommonly, I would limp home with a twisted ankle or a pulled calf muscle.

One day I received a call in my office from a man who wanted to set up an appointment to talk with me about Richard Watkins.

I made some time for him the following day. His name was John Armstrong. He was accompanied by a tall, gaunt man with sallow features and decidedly shifty eyes. Armstrong failed to introduce his companion, who stood behind him, his eyes darting from door to window.

This mystery man seemed to have stepped right out of a Fifties gangster film. I thought I could make out a bulge near the armpit of his poorly tailored black suit. I speculated that he was Armstrong’s body guard, and that the bulge was a holster. For a town the size of Lyndonville, this was really an exciting development.

Armstrong sat in the chair beside my desk; his companion apparently preferred to stand. Armstrong fixed me in his gaze and began: “I am the plant manager of Rochester Plastics. Your patient, Richard Watkins, is one of our employees.” “Okay,” I said.

“We have papers, signed by you, that state Mr. Watkins is physically disabled with chronic fatigue syndrome.” “Okay,” I said.

Armstrong stared at me accusingly. “Mr. Purtillo here…” and he paused to look at his partner, “is a private investigator. Our company has hired him to investigate this claim.” “Okay,” I said.

“We do not think Mr. Watkins is sick. In fact, we have videotape of him playing basketball.” As if on cue, Purtillo, still standing, caught my eye and exposed the corner of a videotape he was carrying in his suitcoat pocket.

“Now,” continued Armstrong, “I’m sure you may have been convinced that Mr. Watkins is sick, so I thought you would like to know about this videotape.”

I cleared my throat as I tried to collect my thoughts. “I am aware that Mr. Watkins has been playing basketball in his backyard,” I said finally. “In fact, I have been playing basketball with him – and on a fairly regular basis. Maybe I’m on that tape,” I added in an attempt at humor that fell flat. “If you had called me about this, I could have saved you some time and money.”

Armstrong stared at me, his mouth open. If Richard Watkins was well enough to play basketball, he was well enough to work, Armstrong insisted.

In turn, I tried to explain the subtleties of a disease that left its victims bed-ridden or couch-ridden 22 hours a day, but sometimes allowed them a short period of heightened energy, a period during which they might appear to the uninitiated to be perfectly well.

I told Armstrong that although Richard often could shoot hoops with me for as much as 30 minutes at a time, he was still too weak to work eight consecutive hours. I added that, not only was I aware of Richard’s hoop shooting, I had encouraged it as exercise therapy because I had hoped it would hasten his recovery.

My words seemed to make no impression at all.

Armstrong really wanted me to look at the tape. I assured him that unless he could show me something other than Richard standing quietly for 15 or 20 minutes in front of a basketball hoop with a wooden ramp underneath it, I didn’t need to watch the video.

I told him, too, that I believed Richard was improving, and that he might be able to return to work within the next six months, as long as Rochester Plastics could offer him a job with flexible hours.

Armstrong promised me that the matter would be taken up for discussion – in court.

I have few regrets in my life. To this day, I regret my failure to ask Purtillo the question that still haunts me: How many hours did he have to hide in the bushes behind Richard’s house to get his 15-minute video?

The sight of the bulging holster caused me to bite my tongue, however. I remained silent.

Months passed without further word from Armstrong and Purtillo. I filled out yet another disability form from Rochester Plastics on Richard’s behalf. Under a section called “current treatment,” I noted that I was encouraging physical activity for my patient.

Although not every CFS patient can boast of improvement, Richard’s return to health continued.
• Four months after my encounter with Armstrong and Purtillo, he was able to go back to work half-time, with some modifications in his duties.
• Six months later, Richard went back to work full-time.

Years have passed and Richard has proven to be one of the lucky CFS sufferers: He has recovered completely.

He is not only working, but coaching basketball on the side. Sometimes, on warm summer evenings, Richard and I throw hoops together and, afterward, drink iced tea.

I’m kind of sorry that we never had an opportunity to see that video played in court.

David S Bell, MD, Aug 15, 2000
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* This article is excerpted with kind permission from Dr. Bell’s classic book Faces of CFS – Case Histories of Chronic Fatigue Syndrome; © David S Bell, MD, 2000. This information has not been evaluated by the FDA. It is general information only and is not meant to prevent, diagnose treat or cure any condition, illness or disease. It is very important that you make no change in your healthcare plan or health support regimen without researching and reviewing it in collaboration with your professional healthcare team.

ME/CFS and/or Long Covid in Aotearoa New Zealand: results from a food insecurity survey

Abstract:

Background: Various chronic health conditions are associated with household vulnerability to food insecurity. There is limited evidence regarding the prevalence of food insecurity or the experiences and challenges related to nutrition and food access among people living with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) and Long Covid (LC) in Aotearoa New Zealand.

Methods: Adults were recruited between June and September 2025 from online communities, support networks and primary care providers to complete an anonymous, online survey. Food insecurity was defined as ‘sometimes’ or ‘never’ being able to afford to eat properly, or ‘sometimes’ or ‘always’ having food run out, eating less, eating less variety due to cost, relying on others for food or using food grants/banks. Descriptive results were reported as percentages; multivariable risk ratios were estimated from generalised linear models. Quotes from open-ended questions were used to illustrate the quantitative findings.

Results: Among 333 respondents, half (50%) had experienced food insecurity in the past 12 months. There was an inverse-J shape association between food insecurity and disease severity. Younger respondents were more likely to face food insecurity than older respondents. Beyond financial constraints, reported challenges to adequate nutrition included physical limitations affecting going shopping, receiving online deliveries and preparing meals.

Conclusion: Findings support the need to recognise ME/CFS and LC as disabilities for the purposes of social service and income support provision, which could relieve some of the financial pressures on patients. We also recommend that GPs routinely screen for food insecurity among people with ME/CFS or LC.

Source: Dey, K., Butler, J., Riordan Crichton, T., Jeffreys, I., & Jeffreys, M. (2026). ME/CFS and/or Long Covid in Aotearoa New Zealand: results from a food insecurity survey. Fatigue: Biomedicine, Health & Behavior, 1–15. https://doi.org/10.1080/21641846.2026.2688051 https://www.tandfonline.com/doi/full/10.1080/21641846.2026.2688051 (Full text)

Cardiopulmonary exercise test results do not change over two sequential days in patients with chronic fatigue syndrome

Abstract:

Background: Two consecutive cardiopulmonary exercise tests (CPETs) performed 24 hours apart are increasingly used to determine post-exertional malaise (PEM) and disability in patients with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Declines in functional capacity on Day 2 reflect impaired recovery and PEM. However, reports have variably described a reduction in peak oxygen consumption (VO2) and/or VO2 at the anaerobic ventilatory threshold (VT). Given the inconsistent findings, we sought to replicate the studies by performing sequential 2-day CPETs in ME/CFS and age- and sex-matched sedentary controls.

Methods: Accordingly, maximal bicycle ergometer CPETs were performed on two consecutive days in 58 patients with ME/CFS (mean age 38.6 ± 9.6 years, Body Mass Index (BMI) 24.1 ± 3.3 kg/m2, 11 men and 47 women) and 25 age-matched sedentary control (CON) subjects (age 38.2 ± 9.9 years, BMI 24.2 ± 3.4 kg/m2, 5 men and 20 women). Peak VO2 was reported as the highest 30-sec average; VT was selected as the nadir of the VE/VO2 and PETCO2 curves, and VE/VCO2 as the slope throughout exercise.

Findings: For ME/CFS and CON subjects, there were no significant changes in Peak VO2 between Day 1 and Day 2 studies (ME/CFS Day 1, 22.3 ± 5.4; Day 2, 22.5 ± 5.4 mL·kg-1·min-1; CON Day 1, 23.4 ± 3.5; Day 2, 22.8 ± 3.6 mL·kg-1·min-1; NS). Similarly, VO2VT and VE/VCO2 slopes were not significantly different between the ME/CFS patients and CON, and on Day 2, they did not show any differences within or between groups. Peak heart rate was significantly higher in CON versus ME/CFS. The level of perceived exertion was significantly greater at all levels of exercise on the Day 1 and Day 2 tests for ME/CFS patients versus CON.

Interpretation: Our data indicate that 2-day CPET provides exercise-related results that are the same in ME/CFS patients and CON subjects. ME/CFS patients have a greater perception of exertion throughout exercise and a lower maximum heart rate than CON. The data do not support using the 2-day CPET protocol to define PEM or disability.

Source: Mancini DM, Cook DB, Brunjes DL, Soto T, Blate M, Quan P, Yamazaki T, Norweg A, Natelson BH. Cardiopulmonary exercise test results do not change over two sequential days in patients with chronic fatigue syndrome. Front Physiol. 2026 May 13;17:1816082. doi: 10.3389/fphys.2026.1816082. PMID: 42212259; PMCID: PMC13213420. https://pmc.ncbi.nlm.nih.gov/articles/PMC13213420/ (Full text)

Cardiopulmonary Exercise Testing Reveals Functional Limitations and Work Disability in Severe Post-COVID-19 and ME/CFS Patients

Abstract:

Background: Patients severely affected by post-COVID-19 condition (PCC) and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) often experience long-term work incapacity, contributing to a growing economic burden. Organ-centered clinical diagnostics frequently fail to explain their work disability.

Objectives: We aimed to objectively assess physical work ability using cardiopulmonary exercise testing (CPET) in a cohort of long-standing and severely affected PCC patients. We hypothesized: (1) patients with ME/CFS exhibit lower peak oxygen uptake (VO₂peak [mL/min/kg]) and peak power output (PPO [W/kg]) than those without; (2) most patients demonstrate objective work disability, closely aligned with subjective perception of disability; (3) oxygen pulse (O2 pulse [mL/bpm]) is reduced in ME/CFS, independent of comorbidity.

Methods: The study was conducted in the Department of Sports Medicine, Prevention and Rehabilitation at Johannes Gutenberg-University Mainz (Mainz, Germany). Between July 31, 2023, and March 31, 2025, a total of 92 PCC patients with suspected occupational disease underwent symptom-limited CPET and completed the Canadian Consensus Criteria, Bell Disability Scale (Bell-Score), and DePaul Symptom Questionnaire (Post-Exertional Malaise) Short Form (DSQ-PEM).

Results: Nearly half of the patients (49%) met ME/CFS criteria and 79% screened positive on the DSQ-PEM. ME/CFS patients showed significantly lower VO₂peak (13.0 ± 3.1 vs. 15.4 ± 4.9, p = 0.012), PPO (0.9 ± 0.3 vs. 1.1 ± 0.5, p = 0.014), and O₂ pulse (7.7 ± 2.0 vs. 8.5 ± 1.9, p = 0.047) compared to those without ME/CFS. Overall, 66% of patients met objective thresholds for work disability (VO₂peak < 15 mL/min/kg or PPO < 1 W/kg). Forty-five patients (51%) had a Bell-Score ≤ 30 and 82% from those had VO₂peak < 15 and/or PPO < 1. VO₂peak and PPO significantly correlated with Bell-Score (r = 0.3, p = 0.005 and r = 0.3, p = 0.003) and were the lowest among patients on medical sick leave (13.3 ± 3.3 and 0.9 ± 0.3), compared to those in occupational reintegration (16.0 ± 3.9, p = 0.04 and 1.2 ± 0.5, p = 0.024) or currently working (18.0 ± 7.1, p = 0.036 and 1.2 ± 0.5, p = 0.015).

Conclusions: Severely affected PCC patients exhibit objective work disability, particularly those with ME/CFS. VO₂peak and PPO are associated with subjective disability and occupational status. Therefore, early integration of CPET into clinical and occupational evaluations can inform individualized therapy planning and return-to-work decisions.

Trial registration DRKS, DRKS00032394. Registered 28 July 2023, https://drks.de/search/de/trial/DRKS00032394.

Source: Tomaskovic A, Weber V, Ochmann DT, Hillen B, Neuberger EWI, Brahmer A, Lachtermann E, Lieb K, Simon P. Cardiopulmonary Exercise Testing Reveals Functional Limitations and Work Disability in Severe Post-COVID-19 and ME/CFS Patients. Sports Med Open. 2026 Apr 27;12(1):50. doi: 10.1186/s40798-026-00995-1. PMID: 42043742. https://link.springer.com/article/10.1186/s40798-026-00995-1 (Full text)

Health, labour market, and social service outcomes for people with Myalgic Encephalomyelitis / Chronic Fatigue Syndrome on a health or disability related benefit: an Aotearoa | New Zealand nationwide cross-sectional study using the integrated data infrastructure

Abstract:

Background: Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is a debilitating chronic condition characterised by persistent fatigue and multisystem symptoms, often leading to long-term disability and socioeconomic disadvantage. In Aotearoa New Zealand (NZ), little is known about the health, labour market, and social service outcomes of people with ME/CFS.

Methods: We conducted a nationwide cross-sectional study using the Integrated Data Infrastructure (IDI) to identify a cohort of working-age individuals (16–64 years) receiving a health or disability-related benefit with a recorded ME/CFS diagnosis. Outcomes were compared to propensity score-matched cohorts: (1) benefit recipients without ME/CFS, and (2) a general population not receiving any benefit. We examined sociodemographic characteristics, co-occurring conditions, health service utilisation, disability support use, employment and income, and benefit reliance.

Results: The study population included 1,902 individuals with ME/CFS. Compared to the general population, the ME/CFS cohort had significantly higher rates of emergency department visits (18.8% vs. 12.8%) and pharmaceutical use (32.8% vs. 14.2% for > 10 medications), and lower current employment (18.3% vs. 83.8%). Compared to other benefit recipients, those with ME/CFS had lower hospitalisation (11.2% vs. 20.9%) and disability support service use (1.6% vs. 7.2%), but higher rates of Supported Living Payment (64.7% vs. 49.0%) and long-term benefit receipt. The ME/CFS cohort was disproportionately female and European, with notable underrepresentation of Māori, Pacific, and Asian ethnic groups.

Conclusions: People with ME/CFS on a benefit in NZ, while only representative of a small fraction of those affected by ME/CFS, still face substantial health burdens, economic vulnerability, and limited access to appropriate supports. The findings highlight systemic policy exclusions that disadvantage individuals with chronic, fluctuating conditions. Improved diagnostic coding, inclusive eligibility criteria, and integrated, person-centred care models are urgently needed to address inequities and support this underserved population.

Source: Bowden N, McLeod K, Anns F, Catchpole L, Charlton F, Taylor B, Vallings R, Vu H, Tate W. Health, labour market, and social service outcomes for people with Myalgic Encephalomyelitis / Chronic Fatigue Syndrome on a health or disability related benefit: an Aotearoa | New Zealand nationwide cross-sectional study using the integrated data infrastructure. BMC Public Health. 2026 Apr 24. doi: 10.1186/s12889-026-27499-7. Epub ahead of print. PMID: 42032509. https://link.springer.com/article/10.1186/s12889-026-27499-7 (Full text available as PDF file)

Long COVID disability burden in US adults

Abstract:

Background: Five years since the scientific and patient communities first identified the syndrome now known as Long COVID, affected individuals lack treatments, and the US lacks population-based data on its disability burden and correlation with National Institutes of Health (NIH) funding. Moreover, akin to other debilitating conditions it often co-occurs with, e.g., Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and dysautonomia, Long COVID disproportionately impacts females whose concerns are often marginalized.

Methods: We quantify Long COVID years lived with disability (YLDs= prevalence x disability weight) in US adults and its actual/YLD-commensurate average annual NIH FY2022-2024 funding versus 68 comparator conditions, by sex predominance. We derive Long COVID prevalence from Census Bureau surveys (9/2022-8/2023) and apply disability weights from the Global Burden of Disease Study.

Results: Long COVID YLDs approximate those of Alzheimer’s and Asthma. Long COVID received 14% of its disability commensurate funding: $106 million vs. $739.8 million. ME/CFS is the most under-funded condition, receiving <1% of its YLD proportionate funding. Among conditions analyzed, 24 are female-predominant (we estimate Long COVID funding two ways), 12 male-predominant, and 33 show no sex predominance. Among the 12 below-median funded/above-median YLD conditions, 7/12 are female-predominant, none are male-predominant. Median funding/per YLD is 5.2 times higher for male- vs. female-predominant conditions (7.0 vs 1.3 million per YLD, p = 0.007). Overall, YLDs explain 6.5% of funding variance in a linear regression model using YLD as the sole predictor (Adjusted R-squared: 0.065).

Conclusions: With chronic conditions like Long COVID rising, disability burden merits greater consideration in funding decisions, as does biological sex.

Source: Bonuck K, Gao Q, Congdon S, Kim RS. Long COVID disability burden in US adults. Commun Med (Lond). 2026 Mar 31;6(1):177. doi: 10.1038/s43856-026-01516-7. PMID: 41917225. https://www.nature.com/articles/s43856-026-01516-7 (Full text)

Evidence of White Matter Neuroinflammation in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: A Diffusion-Based Neuroinflammation Imaging Study

Abstract:

Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a debilitating disorder with suspected neuroinflammatory pathophysiology. However, previous diffusion tensor imaging (DTI) studies have reported inconsistent white matter abnormalities in ME/CFS, and specific white matter inflammatory changes remain poorly characterised. This study employed an advanced diffusion-based neuroinflammation imaging (NII) model to investigate white matter neuroinflammation in ME/CFS.

Diffusion MRI data from 67 ME/CFS patients (median age, 38; and 54 women) and 67 rigorously matched healthy controls (HCs) (median age 38; and 52 women) were analysed. Seven NII-derived metrics were computed: hindered water ratio (NII-HR), restricted fraction (NII-RF), fibre fraction (NII-FF), axial diffusivity (NII-AD), radial diffusivity (NII-RD), mean diffusivity (NII-MD) and fractional anisotropy (NII-FA). Conventional DTI metrics were also calculated. Tract-based spatial statistics were used to perform voxel-wise group comparisons, and multiple regression analysis was conducted to examine the relationship between NII/DTI metrics and clinical measures of mental health, physical health, sleep quality, disability, disease severity and disease duration.

Compared to HCs, ME/CFS patients exhibited widespread white matter abnormalities, including significantly lower NII-HR and NII-RF, and significantly higher NII-FF, NII-AD, NII-MD and NII-FA across association, commissural and projection fibres. Additionally, some regions showed decreased NII-AD and NII-MD in ME/CFS. Lower NII-RF, NII-AD and NII-MD in ME/CFS were significantly associated with worse mental health, while lower NII-RF was also associated with a higher level of disability. Among ME/CFS patients, higher NII-FF was associated with lower disease severity. Conventional DTI showed minimal group differences and no significant clinical associations.

This study provides in vivo evidence of white matter neuroinflammation in ME/CFS, characterised by cerebral edema (reduced NII-HR), cellular infiltration (reduced NII-RF) and axonal reorganisation (increased NII-FF). This suggests NII-derived indices may serve as sensitive biomarkers for neuroinflammation in ME/CFS.

Source: Yu, Q., K.Kothe, R. A.Kwiatek, et al. 2026. “Evidence of White Matter Neuroinflammation in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: A Diffusion-Based Neuroinflammation Imaging Study.” Human Brain Mapping47, no. 4: e70505. https://doi.org/10.1002/hbm.70505. https://onlinelibrary.wiley.com/doi/full/10.1002/hbm.70505 (Full text)

Symptom Patterns, Recovery, and Impact of Long COVID: Findings From a Longitudinal Survey

Abstract:

Background: Long COVID is a predominantly multisystem, often disabling, condition that develops following SARS-CoV-2 infection. We aimed to characterize the pattern, triggers, and impact of Long COVID symptoms.
Methods: Data from a 1-year follow-up of an online survey originally conducted in November 2020 were used. Surveys were coproduced with people living with Long COVID. Participants were adults with Long COVID following confirmed or probable SARS-CoV-2 infection who were not hospitalized in the first 2 weeks of illness. The baseline survey recruited from social media and online support groups using convenience nonprobability sampling.
Results: Of the 2210 first survey participants invited, 1153 (52%) responded to the follow-up survey. The mean age was 47.7 years (standard deviation 10.6) with 84% females, 83% UK-based, 78% university-qualified, and 90% reporting good to excellent health before SARS-CoV-2 infection. Median duration of illness was 19.8 months (interquartile range, 19.3–20.1) at follow-up. Only 5% of participants reported full recovery, and 45% reported a constant pattern of illness (as opposed to fluctuating or relapsing) compared to 17% at baseline. An equal proportion reported being unable to work at baseline (20.4%) and follow-up (20.6%). However, a higher proportion reported being made redundant or taking early retirement at follow-up (8.9%) than at baseline (2.2%).
Conclusions: This study highlights the prolonged nature of Long COVID as well as the impact on work. This has the potential to widen health inequalities and increase hardship in individuals whose life circumstances and job types may not allow them to make necessary adaptations.

Source: Nida Ziauddeen, Marija Pantelic, Margaret E O’Hara, Claire Hastie, Nisreen A Alwan, Symptom Patterns, Recovery, and Impact of Long COVID: Findings From a Longitudinal Survey, Open Forum Infectious Diseases, Volume 13, Issue 2, February 2026, ofag040, https://doi.org/10.1093/ofid/ofag040 https://academic.oup.com/ofid/article/13/2/ofag040/8495807?login=false (Full text)

Seeing is Believing: Identifying the “Ideal Manifestation of Hidden Disability” in Ontario’s and Quebec’s Social Benefits Tribunals

Abstract:

The phenomenon of disability skepticism, especially in relation to “hidden” disabilities like chronic fatigue syndrome (CFS), has fostered a culture of doubt among medical, legal, and public entities. This paper explores the intersection of such skepticism with the social benefits adjudication processes in Ontario and Quebec. In drawing parallels to feminist critiques of the “ideal victim” in sexual assault cases, it argues that the tribunals’ biased framework for believability is based on a claimant’s conformity to stereotypical expectations of what an “ideal” claimant with a hidden disability looks like.

By comparatively examining 10 years worth of Ontario and Quebec tribunal decisions featuring claimants with CFS, this study highlights how those with hidden disabilities are evaluated based on visible manifestations of their disability/emotion, medical/expert evidence, and the apparent credibility of themselves or others as witnesses. This research not only addresses a significant gap in the literature but also calls for reforms in the legal treatment of hidden disabilities, advocating for a shift away from entrenched stereotypes towards a more inclusive and equitable system.

Source: Pascale Malenfant, “Seeing is Believing: Identifying the ‘Ideal Manifestation of Hidden Disability’ in Ontario’s and Quebec’s Social Benefits Tribunals” (2026) 48:2 Dal LJ 753. https://digitalcommons.schulichlaw.dal.ca/dlj/vol48/iss2/1/ (Full text available as PDF file)

The PACE Trial’s GET Manual for Therapists Exposes the Fixed Incremental Nature of Graded Exercise Therapy for ME/CFS

Abstract:

The British National Institute for Health and Care Excellence (NICE) published its updated guidelines for myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) in October 2021. NICE concluded, after an extensive review of the literature, that graded exercise therapy (GET) is harmful and should not be used, and that cognitive behavioural therapy (CBT) is only an adjunctive and not a curative treatment. An article by White et al., which is written by 51 researchers, claims that there are eight anomalies in the review process and the interpretation of the evidence by NICE. In this article, we reviewed the evidence they used to support their claims.

Their three most important claims are that NICE redefined the disease, that CBT and GET are effective, and that fixed incremental increases are not part of GET. However, our analysis shows that the disease was not redefined by NICE. Instead, it was redefined in the 1990s by a group of doctors, including a number of authors of White et al., when they erased the main characteristic of the disease (an abnormally delayed muscle recovery after trivial exertion, which, over the years, has evolved into post-exertional malaise) and replaced it with chronic disabling severe fatigue. Their own studies show that CBT and GET do not lead to a substantial improvement of the quality-of-life scores or a reduction in CFS symptom count, nor do they lead to objective improvement.

Also, both treatments have a negative instead of a positive effect on work and disability status. Moreover, a recent systematic review, which included one of the authors of White et al., showed that ME/CFS patients remain severely disabled after treatment with CBT. Our analysis of, for example, the PACE trial’s GET manual for therapists exposes the fixed incremental nature of GET.

Why the authors are not aware of that is unclear because eight of them were involved in the PACE trial. Three of them were centre leaders and its principal investigators, four others were also centre leaders, and another one was one of the three independent safety assessors of the trial. Moreover, many of these eight authors wrote, or were involved in writing, this manual.

In conclusion, our analysis shows that the arguments that are used to claim that there are eight anomalies in the review process and the interpretation of the evidence by NICE are anomalous and highlight the absence of evidence for the claims that are made. Furthermore, our analysis not only exposes the fixed incremental nature of GET, but also of CBT for ME/CFS.

Source:Vink M, Partyka-Vink K. The PACE Trial’s GET Manual for Therapists Exposes the Fixed Incremental Nature of Graded Exercise Therapy for ME/CFS. Life (Basel). 2025 Apr 2;15(4):584. doi: 10.3390/life15040584. PMID: 40283139. https://www.mdpi.com/2075-1729/15/4/584 (Full text)