ME/CFS Evidence Browser — Classified Studies on Myalgic Encephalomyelitis

2422 studies

1021–1040 of 2,422 studies

E3 PreliminaryMechanismPEM not requiredCross-Sectional

Less efficient and costly processes of frontal cortex in childhood chronic fatigue syndrome.

Mizuno, Kei, Tanaka, Masaaki, Tanabe, Hiroki C et al.·NeuroImage. Clinical·2015

This study looked at how children with ME/CFS use their brains when doing challenging thinking tasks. When performing two tasks at once (like sorting letters while reading a story), children with ME/CFS had to activate much larger areas of their brains compared to healthy children. This suggests their brains work harder and less efficiently to accomplish the same tasks, which may contribute to the exhaustion they experience.

Cognitive Impairment

E3 PreliminaryBehavioralPEM not requiredCase-Control

The Cognitive Behavioral Treatment of Depression and Low Self-Esteem in the Context of Pediatric Chronic Fatigue Syndrome (CFS/ME): A Case Study.

Loades, Maria·Journal of child and adolescent psychiatric nursing : official publication of the Association of Child and Adolescent Psychiatric Nurses, Inc·2015

This study describes treating a 16-year-old girl with ME/CFS who also had depression and low self-esteem using cognitive behavioral therapy (CBT), a talking treatment that helps change unhelpful thinking patterns. While the therapy successfully improved her mood and self-esteem, her ME/CFS symptoms got worse during treatment. This suggests that mood treatments for people with ME/CFS need to be carefully designed to avoid making fatigue symptoms worse.

E3 PreliminaryMechanismPEM not requiredMechanistic

Protracted effects of chronic stress on serotonin-dependent thermoregulation.

Natarajan, Reka, Northrop, Nicole A, Yamamoto, Bryan K·Stress (Amsterdam, Netherlands)·2015

When the body experiences prolonged stress, it can damage the system that controls body temperature through a chemical messenger in the brain called serotonin. This study found that stressed animals had trouble warming up when exposed to cold—the opposite of what healthy animals normally do—and this problem persisted even after stress ended. By blocking stress hormones during the stressful period, researchers could prevent these temperature control problems, suggesting stress-related damage to thermoregulation might be reversible.

E3 PreliminaryDiagnosticPEM not requiredMethods-Paper

Hybrid facial image feature extraction and recognition for non-invasive chronic fatigue syndrome diagnosis.

Chen, Yunhua, Liu, Weijian, Zhang, Ling et al.·Computers in biology and medicine·2015

Researchers developed a computer program that analyzes facial features—such as forehead wrinkles, under-eye puffiness, skin color, and mouth shape—to help diagnose ME/CFS. The program was trained using photographs of Chinese patients and achieved about 88% accuracy in identifying who had the condition. This approach could potentially help doctors diagnose ME/CFS more objectively without needing blood tests or other invasive procedures.

E3 PreliminaryReviewPEM not requiredReview-Narrative

Postural Tachycardia Syndrome: Beyond Orthostatic Intolerance.

Garland, Emily M, Celedonio, Jorge E, Raj, Satish R·Current neurology and neuroscience reports·2015

This review explains postural tachycardia syndrome (POTS), a condition where your heart rate increases excessively when you stand up, often causing dizziness, fatigue, and other symptoms that improve when lying down. POTS can result from several different underlying problems—such as low blood volume, overactive stress nerves, or problems with small nerves in the legs—and may overlap with other conditions like ME/CFS. Treatment typically involves a combination of lifestyle changes, structured exercise, and sometimes medications.

Autonomic Nervous System

E3 PreliminaryMechanismPEM not requiredMechanistic

Evidence for sensitized fatigue pathways in patients with chronic fatigue syndrome.

Staud, Roland, Mokthech, Meriem, Price, Donald D et al.·Pain·2015

This study tested whether ME/CFS patients have unusually sensitive "fatigue pathways" in their muscles and nerves that overreact to exercise. Researchers had patients and healthy controls do hand exercises, then briefly cut off blood flow to the forearm to trap muscle chemicals in the tissues. ME/CFS patients reported increased fatigue during the blood flow cutoff, while healthy people's fatigue actually decreased—suggesting their muscles and nerves are sending stronger fatigue signals.

Post-Exertional Malaise

E3 PreliminaryReviewPEM unclearReview-Narrative

[Research progress of fecal microbiota transplantation].

Dai, Ting, Tang, Tongyu·Zhonghua wei chang wai ke za zhi = Chinese journal of gastrointestinal surgery·2015

This review discusses fecal microbiota transplantation (FMT), a procedure where healthy bacteria from donor stool are transferred to patients to restore a damaged gut microbiome. The gut bacteria can be damaged by antibiotics or disease, leading to infections and other health problems. Researchers are exploring whether FMT might help treat several conditions, including chronic fatigue syndrome (ME/CFS), but it is not yet standard medical treatment because many doctors and patients are hesitant about the approach.

Immune System

E3 PreliminaryDiagnosticPEM unclearMethods-Paper

What matters to children with CFS/ME? A conceptual model as the first stage in developing a PROM.

Parslow, Roxanne, Patel, Aarti, Beasant, Lucy et al.·Archives of disease in childhood·2015

Researchers interviewed 25 children with ME/CFS to understand what matters most to them about their illness and lives. Children described four main areas that are affected: their symptoms (which change unpredictably), their ability to be physically active, their social life with friends and family, and their emotional well-being. The study found that support from both doctors and schools is really important in helping children manage their condition.

E3 PreliminaryReviewPEM unclearReview-Narrative

Mitoprotective dietary approaches for Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: Caloric restriction, fasting, and ketogenic diets.

Craig, Courtney·Medical hypotheses·2015

This study explores whether certain dietary approaches—like eating fewer calories, fasting, or following a ketogenic (low-carb, high-fat) diet—might help ME/CFS symptoms by protecting the mitochondria, which are the energy-producing parts of our cells. The authors review evidence suggesting that ME/CFS involves problems with mitochondrial function and immune activation that exhausts these cellular power plants. They propose that these three dietary strategies may help restore mitochondrial health and reduce symptoms, though they note that more research is needed to test this in actual ME/CFS patients.

Immune System

E3 PreliminaryReviewPEM unclearReview-Narrative

Brain "fog," inflammation and obesity: key aspects of neuropsychiatric disorders improved by luteolin.

Theoharides, Theoharis C, Stewart, Julia M, Hatziagelaki, Erifili et al.·Frontiers in neuroscience·2015

This review discusses 'brain fog'—trouble thinking clearly, concentrating, and remembering—which affects people with ME/CFS and other conditions. Researchers suggest brain fog may be caused by inflammation and immune cells releasing harmful chemicals in the brain. A natural compound called luteolin, which has anti-inflammatory properties, shows promise in early studies for reducing brain fog symptoms.

Neuroinflammation

E3 PreliminaryReviewPEM not requiredReview-Narrative

Glyphosate, pathways to modern diseases III: Manganese, neurological diseases, and associated pathologies.

Samsel, Anthony, Seneff, Stephanie·Surgical neurology international·2015

This paper explores whether glyphosate (a common herbicide in Roundup) might deplete the body of manganese, an essential mineral needed for brain health, nerve protection, and gut bacteria balance. The authors suggest that low manganese levels could contribute to various neurological conditions and gut problems, and they propose a mechanism connecting herbicide exposure to these health issues.

Energy Metabolism

E3 PreliminaryDiagnosticPEM requiredMethods-Paper

Capturing the post-exertional exacerbation of fatigue following physical and cognitive challenge in patients with chronic fatigue syndrome.

Keech, Andrew, Sandler, Carolina X, Vollmer-Conna, Ute et al.·Journal of psychosomatic research·2015

This study developed a new questionnaire called the Fatigue and Energy Scale (FES) to measure the specific type of exhaustion that ME/CFS patients experience after physical or mental activity. Researchers talked with 19 patients to understand what their fatigue feels like, then tested the questionnaire with patients doing exercise, driving simulation, and everyday tasks. The results showed that the FES successfully captured both the physical tiredness and mental fog that worsens after activity in ME/CFS.

Post-Exertional Malaise

E3 PreliminaryReviewPEM unclearReview-Narrative

TMD and chronic pain: a current view.

Furquim, Bruno D'Aurea, Flamengui, Lívia Maria Sales Pinto, Conti, Paulo César Rodrigues·Dental press journal of orthodontics·2015

This review examines how temporomandibular disorders (jaw joint and muscle problems) develop and persist. The authors found that chronic muscle pain in the jaw works similarly to other widespread pain conditions like fibromyalgia and ME/CFS—through a process called central sensitization where the nervous system becomes overly sensitive to pain signals. They explain that genetics and nervous system function influence whether symptoms improve or worsen.

Autonomic Nervous System

E3 PreliminaryMechanismPEM requiredMechanistic

In silico analysis of exercise intolerance in myalgic encephalomyelitis/chronic fatigue syndrome.

Lengert, Nicor, Drossel, Barbara·Biophysical chemistry·2015

This study used computer models to understand why people with ME/CFS struggle with exercise. The researchers simulated what happens in muscle cells during and after physical activity, focusing on mitochondria—the parts of cells that produce energy. Their model showed that when mitochondrial function is reduced, muscles can't make enough energy (ATP), which causes them to accumulate toxic substances like lactate and acid, and can lead to cell death. Importantly, repeated exercise made this problem much worse in their simulations.

Energy MetabolismPost-Exertional Malaise

E3 PreliminaryMechanismPEM unclearCross-Sectional

Characterisation of cell functions and receptors in Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (CFS/ME).

Hardcastle, Sharni Lee, Brenu, Ekua Weba, Johnston, Samantha et al.·BMC immunology·2015

This study examined immune system cells from people with moderate and severe ME/CFS compared to healthy controls. Researchers found that people with ME/CFS had abnormal patterns in their immune cells, including changes in markers on T cells, NK cells, and other infection-fighting cells. These differences were more pronounced in people with more severe illness, suggesting that immune dysfunction may be connected to ME/CFS severity.

Immune System

E3 PreliminaryDiagnosticPEM unclearMethods-Paper

The use of mixed methods in studying a chronic illness.

Jason, Leonard A, Reed, Jordan·Health psychology and behavioral medicine·2015

This study explains how researchers can better understand ME/CFS by combining two research approaches: collecting personal stories and experiences from patients (qualitative methods) alongside measuring data with numbers and statistics (quantitative methods). When researchers used both methods together, they gained a fuller picture of ME/CFS—including how the disease spreads, what people think about the illness name, and which treatments work—than they would have using just one approach alone.

Interventions

E3 PreliminaryCommentaryPEM requiredEditorial

Reflections on the Institute of Medicine's systemic exertion intolerance disease.

Jason, Leonard A, Sunnquist, Madison, Brown, Abigail et al.·Polskie Archiwum Medycyny Wewnetrznej·2015

The Institute of Medicine proposed renaming chronic fatigue syndrome to 'systemic exertion intolerance disease' (SEID) and created new diagnostic criteria. This editorial critiques that change, noting that most patients rejected the new name and the new criteria were not tested on actual patient populations before being recommended. The new criteria may incorrectly identify more people as having the disease while missing key features that define it.

Post-Exertional Malaise

E3 PreliminaryCohortPEM not requiredCross-Sectional

The Nature of Fatigue in Chronic Fatigue Syndrome.

Olson, Karin, Zimka, Oksana, Stein, Eleanor·Qualitative health research·2015

This study asked 14 people with ME/CFS to describe their experience of fatigue in their own words. Participants identified three different types of tiredness: regular tiredness (before diagnosis), fatigue (during daily activities), and exhaustion (after overexertion). The most helpful strategies people used were pacing activities and taking extended rest periods to manage their symptoms and prevent crashes.

Post-Exertional Malaise

E3 PreliminaryDiagnosticPEM unclearMethods-Paper

An overview of operationalizing criteria for ME, ME/CFS, and CFS case definitions.

Jason, Leonard A, So, Suzanna, Evans, Meredyth et al.·Journal of prevention & intervention in the community·2015

This study looks at how researchers define and identify ME/CFS using different sets of criteria. The researchers examined various diagnostic guidelines to understand how they work in practice and what makes a good case definition. This work helps ensure that when doctors diagnose ME/CFS, they're using clear, consistent standards.

Diagnostics

E3 PreliminaryReviewPEM not requiredReview-Narrative

Fibromyalgia: A Critical and Comprehensive Review.

Borchers, Andrea T, Gershwin, M Eric·Clinical reviews in allergy & immunology·2015

Fibromyalgia is a condition that causes widespread pain, fatigue, and sleep problems, and it shares many symptoms with other conditions that are hard to diagnose. This review explains that while some people think fibromyalgia might be caused by infection, inflammation, or injury, there is not strong evidence supporting these ideas. The authors recommend that treatment should focus on education, exercise, physical therapy, and approved medications rather than opioids.

Pain and SensitizationSleepDiagnostics

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Less efficient and costly processes of frontal cortex in childhood chronic fatigue syndrome.

The Cognitive Behavioral Treatment of Depression and Low Self-Esteem in the Context of Pediatric Chronic Fatigue Syndrome (CFS/ME): A Case Study.

Protracted effects of chronic stress on serotonin-dependent thermoregulation.

Hybrid facial image feature extraction and recognition for non-invasive chronic fatigue syndrome diagnosis.

Postural Tachycardia Syndrome: Beyond Orthostatic Intolerance.

Evidence for sensitized fatigue pathways in patients with chronic fatigue syndrome.

[Research progress of fecal microbiota transplantation].

What matters to children with CFS/ME? A conceptual model as the first stage in developing a PROM.

Mitoprotective dietary approaches for Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: Caloric restriction, fasting, and ketogenic diets.

Brain "fog," inflammation and obesity: key aspects of neuropsychiatric disorders improved by luteolin.

Glyphosate, pathways to modern diseases III: Manganese, neurological diseases, and associated pathologies.

Capturing the post-exertional exacerbation of fatigue following physical and cognitive challenge in patients with chronic fatigue syndrome.

TMD and chronic pain: a current view.

In silico analysis of exercise intolerance in myalgic encephalomyelitis/chronic fatigue syndrome.

Characterisation of cell functions and receptors in Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (CFS/ME).

The use of mixed methods in studying a chronic illness.

Reflections on the Institute of Medicine's systemic exertion intolerance disease.

The Nature of Fatigue in Chronic Fatigue Syndrome.

An overview of operationalizing criteria for ME, ME/CFS, and CFS case definitions.

Fibromyalgia: A Critical and Comprehensive Review.

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