Category: Pediatric ME/CFS

ICD-10 Diagnoses prior to ME/CFS diagnosis in children and young people suggest potential early diagnostic indicators

Abstract:

To identify ICD-10-GM codes recorded in the year preceding a Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) diagnosis, we conducted a 1:5 matched case–control study using statutory health insurance data of 6–27-year-olds with ME/CFS (ICD-10-GM: G93.3, 2020–2022). Cases (n = 6,077) were matched 1:5 to controls by birth year, sex, and postal code. ICD-10-GM codes from the preceding year were analyzed using multivariable conditional logistic regression, reporting odds ratios (OR) and 95% confidence intervals. Most cases were female and aged 18–27 years.

Forty-four ICD-10-GM code classes were associated with increased and four with decreased odds, spanning 13 diagnostic chapters. Most associations were in chapters F (mental/behavioral disorders), R (respiratory diseases), and M (musculoskeletal disorders). Frequent conditions included fatigue, depression, pain disorders, and somatoform disorders (≥ 10% in cases; ORs 1.11–2.19. Rare diagnoses (≤ 1% prevalence), such as fibromyalgia (OR 2.08, 95% CI: 1.20–3.59) and mild cognitive impairment (2.93, 1.21–7.10), were strongly associated. Four COVID-19 or vaccination-related code classes were identified, with post-COVID-19 condition showing the highest OR (3.84, 2.97–4.98). Several ICD-10-GM codes, including COVID-19 related codes, were associated with later ME/CFS diagnoses.

Prospective studies should clarify timing relative to ME/CFS onset, and distinguish between pre-existing conditions, comorbidities, early manifestations, or misdiagnoses.

Source:Wirth M, Haastert B, Linnenkamp U, Andrich S, Icks A, Pricoco R, Behrends U, De Bock F. ICD-10 Diagnoses prior to ME/CFS diagnosis in children and young people suggest potential early diagnostic indicators. Sci Rep. 2026 Feb 26. doi: 10.1038/s41598-026-40848-1. Epub ahead of print. PMID: 41741569. https://www.nature.com/articles/s41598-026-40848-1 (Full text)

Proposed Mechanistic Axis of Infections and mTOR Hyperactivation: A Multidisciplinary Review of Immune, Rheumatologic, and Psychiatric Links

Abstract:

Early-life infections can produce durable changes in immune function and behavior. We propose a mechanistic hypothesis positioning the mechanistic target of rapamycin (mTOR) as the link between peripheral inflammation and central nervous system dysfunction in pediatric post-infectious syndromes. Based on clinical, translational, and experimental literature, we outline a stepwise pathway.

First, sustained mTOR activation skews T-cell and macrophage differentiation toward pro-inflammatory and autoimmune states. Second, endothelial mTOR signaling weakens tight junctions and increases vesicular transport, compromising blood-brain barrier integrity. Third, cytokines and sometimes autoreactive cells enter the brain and engage mTOR in microglia and neurons, driving neuroinflammation, impaired synaptic maintenance and plasticity, and neurotransmitter disruption.

This framework accounts for features observed in Long COVID, myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), and pediatric acute neuropsychiatry syndrome (PANS/PANDAS) and yields testable predictions on pathway activity and barrier permeability. It also motivates targeted interventions that modulate mTOR-related processes in immune and endothelial compartments and within neural circuits in children. So, this article aims to outline a mechanistic framework linking infection-driven mTOR activation to post-infectious neuropsychiatric syndromes.

Source: Fronticelli Baldelli G, Buonsenso D. Proposed Mechanistic Axis of Infections and mTOR Hyperactivation: A Multidisciplinary Review of Immune, Rheumatologic, and Psychiatric Links. Children (Basel). 2025 Nov 25;12(12):1603. doi: 10.3390/children12121603. PMID: 41462744. https://www.mdpi.com/2227-9067/12/12/1603 (Full text)

Evaluation of an online patient education program for children and young people with ME/CFS and their parents within the BAYNET FOR MECFS Study

Abstract:

Background: ME/CFS (Myalgic Encephalomyelitis/Chronic Fatigue Syndrome) poses challenges for affected children and young people (CYP) and their parents. There is often a lack of knowledge about the illness. Education programs can help address this by providing knowledge and supporting the independent management of the condition. For this reason, two online education programs – one for affected CYP and one for their parents – were developed, implemented, and evaluated in terms of acceptance, format, and benefits.

Methods: 24 CYP aged of up to 20 years with ME/CFS and their parents were recruited for this study. Of these 22 CYP with ME/CFS and 20 parents participated in the online education program. After development and conduction of the programs, six affected CYP were interviewed using written questions, which were answered via an audio device. Furthermore, 6 semi-structured interviews were obtained with parents. All parents also received an online questionnaire to evaluate the program. Data were analyzed using both quantitative and qualitative methods.

Results: Both CYP and their parents expressed overall satisfaction with the program highlighting aspects such as knowledge acquisition or reinforcement and, importantly, the opportunity to connect with other affected CYP or their parents. The online format was also perceived very positively.

Discussion: The online education program met the expectations and needs of both affected CYP and parents regarding content and format. It facilitated exchange and provided practical knowledge. In this format, the online program appears to be a valuable component of care for those affected.

Source: Keicher F, Thomann J, Erlenwein J, Schottdorf M, Wiejaczka K, Reiter NL, Scholz-Schwärzler N, Vogel B, Stojanov S, Augustin S, Saramandic M, Dettmer K, Englbrecht S, Jaeschke R, Schanz L, Dodel V, Zipper C, Schieweck N, Ernst G, Behrends U, Spiegler J. Evaluation of an online patient education program for children and young people with ME/CFS and their parents within the BAYNET FOR MECFS Study. Neuropediatrics. 2025 Dec 23. doi: 10.1055/a-2773-9655. Epub ahead of print. PMID: 41435903. https://www.thieme-connect.com/products/ejournals/abstract/10.1055/a-2773-9655 (Full text available as PDF file)

Pediatric Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS): A Diagnostic and Communication Case Study for Health Care Providers in Training

Abstract:

Introduction: Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a chronic, complex illness. No diagnostic tests exist; illness evaluation relies on medical history, physical exam, and laboratory tests. While more is known about ME/CFS in adults, it can affect children and adolescents as a chronic condition.

Methods: We implemented an ME/CFS pediatric educational activity (diagnosis, management, and communication) with medical, physician assistant, and nursing students at one university and with medical students at a second university. Pretests, two videos and slides, and posttests were completed in approximately 40 minutes. Evaluation included quantitative and qualitative measures for knowledge, attitudes, beliefs, confidence, and clinical information about ME/CFS.

Results: The first group included 31 students who reported low familiarity and clinical exposure to ME/CFS. At posttest, 25 students (81%) recognized ME/CFS as a medical condition compared to seven (23%) at pretest. Using 0-5 scales, mean pretest-to-posttest ability to diagnose increased from 1.0 to 3.5, and confidence to communicate increased from 1.4 to 3.9. The second group, including 26 students pretest and 19 posttest, also reported low familiarity and clinical exposure The posttest showed increased self-rated ability to diagnose (pretest M: 0.6, posttest M: 3.3) and confidence to communicate (pretest M: 1.4, posttest M: 3.7). Qualitative feedback for this group showed understanding of pediatric ME/CFS symptoms, management, and communication.

Discussion: This educational activity increased knowledge of ME/CFS as self-reported ability to make a diagnosis and increased confidence to communicate about pediatric ME/CFS. Participating students showed changes in attitudes towards ME/CFS as a medical condition.

Source: Brimmer DJ, Lin JS, Selinger HA, Issa A, Fall EA, Unger ER. Pediatric Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS): A Diagnostic and Communication Case Study for Health Care Providers in Training. MedEdPORTAL. 2025 Mar 14;21:11507. doi: 10.15766/mep_2374-8265.11507. PMID: 40092054; PMCID: PMC11906784. https://pmc.ncbi.nlm.nih.gov/articles/PMC11906784/ (Full text)

Serial Paediatrics Omics Tracking in Myalgic Encephalomyelitis (SPOT-ME): protocol paper for a multidisciplinary, observational study of clinical and biological markers of paediatric myalgic encephalomyelitis/chronic fatigue syndrome in Australian adolescents aged 12-19 years

Abstract:

Introduction: Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a disabling condition that can affect adolescents during a vulnerable period of development. The underlying biological mechanisms for ME/CFS remain unclear and have rarely been investigated in the adolescent population, despite this period representing an age peak in the overall incidence. The primary objective of this is to provide a foundational set of biological data on adolescent ME/CFS patients. Data generated will be compared with controls and over several time points within each patient to potentially develop a biomarker signature of the disease, identify subsets or clusters of patients, and to unveil the pathomechanisms of the disease.

Methods and analysis: This protocol paper outlines a comprehensive, multilevel, longitudinal, observational study in paediatric ME/CFS. ME/CFS patients aged 12-19 years and controls will donate biosamples of urine, blood, and peripheral blood mononuclear cells for an in-depth omics profiling analysis (whole-genome sequencing, metabolomics and quantitative proteomics) while being assessed by gold-standard clinical and neuropsychological measures. ME/CFS patients will then be provided with a take-home kit that enables them to collect urine and blood microsamples during an average day and during days when they are experiencing postexertional malaise. The longitudinal repeated-measures study design is optimal for studying heterogeneous chronic diseases like ME/CFS as it can detect subtle changes, control for individual differences, enhance precision and boost statistical power. The outcomes of this research have the potential to identify biomarker signatures, aid in understanding the underlying mechanisms, and ultimately, improve the lives of children with ME/CFS.

Ethics and dissemination: This project was approved by the Royal Children’s Hospital’s Human Research Ethics Committee (HREC 74175). Findings from this study will be disseminated through peer-reviewed journal publications and presentations at relevant conferences. All participants will be provided with a summary of the study’s findings once the project is completed.

Source: Thomas N, Chau T, Tantanis D, Huang K, Scheinberg A, Gooley PR, Josev EK, Knight SJ, Armstrong CW. Serial Paediatrics Omics Tracking in Myalgic Encephalomyelitis (SPOT-ME): protocol paper for a multidisciplinary, observational study of clinical and biological markers of paediatric myalgic encephalomyelitis/chronic fatigue syndrome in Australian adolescents aged 12-19 years. BMJ Open. 2024 Dec 10;14(12):e089038. doi: 10.1136/bmjopen-2024-089038. PMID: 39658280. https://bmjopen.bmj.com/content/14/12/e089038 (Full text)

Development and Implementation of an Online Patient Education Program for Children and Adolescents With Myalgic Encephalomyelitis/Chronic Fatigue Syndrome, Their Parents, Siblings, and School Personnel: Protocol for the Prospective BAYNET FOR ME/CFS Study

Abstract:

Background: Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) presents significant challenges for affected children and adolescents, their social environment, and treating physicians, due to its profound impact on quality of life and the lack of causal therapeutic approaches. One crucial aspect of care that has been missing for these patients is comprehensive education for both them and their social circles.

Objective: This study protocol aims to outline the goals, study design, execution, and evaluation of the subproject within the BAYNET FOR ME/CFS project. The focus is on developing online education programs for children and adolescents with ME/CFS, as well as for their parents, siblings, and school staff. These programs are designed to improve independent disease management, increase knowledge, and promote interaction with other affected individuals.

Methods: In phase I, the group-based online education programs were developed by a multidisciplinary team based on the ModuS concept created by the Competence Network for Patient Education (KomPaS). These programs were then piloted and finalized. Phase II involved recruiting participants and implementing the finalized programs. Given the restricted physical and cognitive capacities of the affected individuals, the patient education programs were exclusively designed in a digital format to facilitate participation. In phase III, the programs will be evaluated for acceptance, completeness, and participant satisfaction. The qualitative assessment will focus on individual expectations and benefits derived from the training. Phase IV will further assess the programs in terms of improvements in disease knowledge, health-related quality of life, life satisfaction, and family burden.

Results: The programs were developed, piloted, and finalized during phase I, which ran from December 2022 to May 2023. The pilot phase, from March to May 2023, led to adaptations in the program concept. In total, 8 patients and their parents, 5 siblings, and 59 school staff participated in the piloting. Adjustments were made to the format, content, duration, and schedule to better meet the needs of the affected individuals and their social circles. In phase II, participant recruitment for the patient education program took place from January to July 2023. The study successfully recruited 24 young patients with ME/CFS and their parents, along with 8 siblings and 51 school staff. Two program blocks for patients and parents and 2-3 blocks for siblings and school staff commenced in May 2023 and were completed within the same year. Phase III began after phase II and involves the evaluation of the programs, with the process expected to conclude by the end of 2024. Phase IV, planned for 2025-2026, will involve the rollout of the program to 150 children and their caretakers. This phase will focus on evaluating disease knowledge, health-related quality of life, life satisfaction, and family burden, as well as include longitudinal assessments.

Conclusions: The data aim to support the development of a comprehensive, interprofessional care model for children and adolescents with ME/CFS.

Source: Keicher F, Thomann J, Erlenwein J, Schottdorf M, Reiter NL, Scholz-Schwärzler NP, Vogel B, Warlitz C, Stojanov S, Augustin S, Goldbrunner L, Schanz L, Dodel V, Zipper C, Schiweck N, Jaeschke R, Saramandic M, Wiejaczka K, Eberhartinger M, Dettmer K, Hattesohl DBR, Englbrecht S, Behrends U, Spiegler J. Development and Implementation of an Online Patient Education Program for Children and Adolescents With Myalgic Encephalomyelitis/Chronic Fatigue Syndrome, Their Parents, Siblings, and School Personnel: Protocol for the Prospective BAYNET FOR ME/CFS Study. JMIR Res Protoc. 2024 Nov 21;13:e54679. doi: 10.2196/54679. PMID: 39570662. https://www.researchprotocols.org/2024/1/e54679 (Full text)

Management of severe ME/CFS in children and young people in the UK: a British Paediatric Surveillance Unit study

Abstract:

Objective: Severe myalgic encephalomyelitis or chronic fatigue syndrome (ME/CFS) in children and young people (CYP) is a little-understood condition which significantly impacts education, development and quality of life. We used data from a population-wide surveillance study to explore the screening investigation, referral and management of suspected cases of paediatric severe ME/CFS.

Methods: A British Paediatric Surveillance Unit (BPSU) study reported cases of CYP with suspected severe ME/CFS between February 2018 and February 2019. Paediatricians reporting cases to BPSU and allied healthcare professionals in two large specialist paediatric ME/CFS centres were invited to complete questionnaires for CYP meeting the surveillance case definition. The study focused primarily on CYP with confirmed severe ME/CFS and the extent to which their care met NICE (The National Institute for Health and Care Excellence) recommendations but also considered separately those with probable or possible severe ME/CFS.

Results: This study includes a total of 92 CYP with suspected severe ME/CFS; 33 meeting criteria for severe ME/CFS and an additional 59 classified as probable or possible severe ME/CFS. For 16 possible cases, incomplete investigation to exclude alternative diagnoses prevented confirmation of a severe ME/CFS diagnosis. Only 21 of 33 (64%) confirmed severe ME/CFS cases had been referred to specialist services. The management provided varied considerably between patients and four received nothing at all. Of the management provided, the most frequent approaches were medication (67%), activity management (61%) and physiotherapy (61%). Domiciliary assessments and support, and social services referrals were received by 12% and 6% of confirmed severe cases. Similar proportions of management approaches were seen in probable/possible severe ME/CFS.

Conclusion: Full investigation is frequently incomplete in CYP with suspected severe ME/CFS and recommendations for referral and management are poorly implemented, in particular the needs of CYP who are unable to leave their home might be poorly met.

Source: Royston AP, Burge S, Idini I, Brigden A, Pike KC. Management of severe ME/CFS in children and young people in the UK: a British Paediatric Surveillance Unit study. BMJ Paediatr Open. 2024 Mar 7;8(1):e002436. doi: 10.1136/bmjpo-2023-002436. PMID: 38453418. https://bmjpaedsopen.bmj.com/content/8/1/e002436 (Full text)

Graded exercise therapy compared to activity management for paediatric chronic fatigue syndrome/myalgic encephalomyelitis: pragmatic randomized controlled trial

Abstract

The MAGENTA pragmatic parallel groups randomized controlled trial compared graded exercise therapy (GET) with activity management (AM) in treating paediatric myalgic encephalomyelitis or chronic fatigue syndrome (ME/CFS). Children aged 8-17 years with mild/moderate ME/CFS and presenting to NHS specialist paediatric services were allocated at random to either individualised flexible treatment focussing on physical activity (GET, 123 participants) or on managing cognitive, school and social activity (AM, 118 participants) delivered by NHS therapists.

The primary outcome was the self-reported short-form 36 physical function subscale (SF-36-PFS) after 6 months, with higher scores indicating better functioning. After 6 months, data were available for 201 (83%) participants who received a mean of 3.9 (GET) or 4.6 (AM) treatment sessions. Comparing participants with measured outcomes in their allocated groups, the mean SF-36-PFS score changed from 54.8 (standard deviation 23.7) to 55.7 (23.3) for GET and from 55.5 (23.1) to 57.7 (26.0) for AM giving an adjusted difference in means of -2.02 (95% confidence interval -7.75, 2.70). One hundred thirty-five participants completed the mean SF-36-PFS at 12 months, and whilst further improvement was observed, the difference between the study groups remained consistent with chance.

The two study groups showed similar changes on most of the secondary outcome measures: Chalder Fatigue, Hospital Anxiety and Depression Scale: Depression, proportion of full-time school attended, a visual analogue pain scale, participant-rated change and accelerometer measured physical activity, whether at the 6-month or 12-month assessment.

There was an isolated finding of some evidence of an improvement in anxiety in those allocated to GET, as measured by the Hospital Anxiety and Depression Scale at 6 months, with the 12-month assessment, and the Spence Children’s Anxiety scale being aligned with that finding. There was weak evidence of a greater risk of deterioration with GET (27%) than with AM (17%; p = 0.069).

At conventional UK cost per QALY thresholds, the probability that GET is more cost-effective than AM ranged from 18 to 21%. Whilst completion of the SF-36-PFS, Chalder Fatigue Scale and EQ-5D-Y was good at the 6-month assessment point, it was less satisfactory for other measures, and for all measures at the 12-month assessment.

Conclusion: There was no evidence that GET was more effective or cost-effective than AM in this setting, with very limited improvement in either study group evident by the 6-month or 12-month assessment points.

Trial registration: The study protocol was registered at www.isrctn.com (3rd September 2015; ISRCTN 23962803) before the start of enrolment to the initial feasibility phase.

Source: Gaunt DM, Brigden A, Harris SRS, Hollingworth W, Jago R, Solomon-Moore E, Beasant L, Mills N, Sinai P, Crawley E, Metcalfe C. Graded exercise therapy compared to activity management for paediatric chronic fatigue syndrome/myalgic encephalomyelitis: pragmatic randomized controlled trial. Eur J Pediatr. 2024 Mar 2. doi: 10.1007/s00431-024-05458-x. Epub ahead of print. PMID: 38429546. https://link.springer.com/article/10.1007/s00431-024-05458-x (Full text)

A suffering body, hidden away from others: The experience of being long-term bedridden with severe myalgic encephalomyelitis/chronic fatigue syndrome in childhood and adolescence

Abstract:

In this article, we present findings from a qualitative study examining how young women experience being long-term bedridden with myalgic encephalomyelitis (ME), also known as chronic fatigue syndrome (CFS), during childhood and adolescence. The aim is to explore how young women who fell ill with ME/CFS during childhood and adolescence look back on their lived experience of being long-term bedridden from the vantage point of being fully or partially recovered.

Informed by a phenomenological theoretical perspective, the researchers applied a narrative methodological approach involving the analysis of interviews with 13 women, aged 16–29 years at the time of the interview. Attention was particularly paid to how participants structured their narratives and to the events (telling moments) they identified as important.

Four major storylines were developed: Ambivalent responses to the presence of others; A body on the edge of life; An eternity in the dark; and Recasting painful memories of being bedridden and alone.

Based on our findings, we argue that the experience of being long-term bedridden with ME/CFS during childhood and adolescence can be understood and communicated as a plot in which individuals find themselves pushed to the extreme limit of suffering and loneliness.

Source: Krabbe, S. H., Bjorbækmo, W. S., Mengshoel, A. M., Sveen, U., & Groven, K. S. (2024). A suffering body, hidden away from others: The experience of being long-term bedridden with severe myalgic encephalomyelitis/chronic fatigue syndrome in childhood and adolescence. Nursing Inquiry, e12625. https://doi.org/10.1111/nin.12625 https://onlinelibrary.wiley.com/doi/10.1111/nin.12625 (Full text)

A qualitative study to explore children’s experience of having long-Covid

There is currently uncertainty and limited research surrounding long-COVID in the paediatric population. Reports are conflicting regarding the prevalence, duration, and impact of long COVID on children. Despite the limited evidence, it is becoming increasingly apparent that numerous children are experiencing long-term physical and psychological effects of COVID19 many months after the initial infection. This thesis aimed to investigate the lived experience of children with long-COVID.
Part one of this portfolio presents a systematic review of the experiences of parents who provide care for a child with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). The findings of the review indicate a paucity of research on parents’ experiences. However, it is apparent that caring for a child with ME/CFS is an all-encompassing, relentless undertaking, which can detrimentally impact parents’ well-being, everyday life, and relationships.
Given both ME/CFS and long-COVID are both post-viral illnesses, sharing similar symptoms, with low-level immune system activation. It may be conjectured that the existing knowledge on children with ME/CFS could benefit both children suffering from long-COVID and help inform parents on how best to care for their children.
Part two of this portfolio presents an empirical paper exploring the lived-experience of young people with long-COVID. Reflexive thematic analysis found three key themes, specifically, the perceived barriers to coping with long-COVID, ongoing associated emotional distress, and a desire for an integrated approach to long-COVID care.
Source: Carolyn Noorderhaven. A qualitative study to explore children’s experience of having long-Covid. Doctoral thesis: University of Surrey, School of Psychology. https://openresearch.surrey.ac.uk/esploro/outputs/doctoral/A-qualitative-study-to-explore-childrens/99813065702346?institution=44SUR_INST (Full text available as PDF file)