Reliability and Validity of Self-Report Questionnaires as Indicators of Fatigue in RYR1-Related Disorders

Pathophysiology and Management of Fatigue in Neuromuscular Diseases

Fatigue is a major determinant of quality of life and motor function in patients affected by several neuromuscular diseases, each of them characterized by a peculiar physiopathology and the involvement of numerous interplaying factors. This narrative review aims to provide an overview on the pathophysiology of fatigue at a biochemical and molecular level with regard to muscular dystrophies, metabolic myopathies, and primary mitochondrial disorders with a focus on mitochondrial myopathies and spinal muscular atrophy, which, although fulfilling the definition of rare diseases, as a group represent a representative ensemble of neuromuscular disorders that the neurologist may encounter in clinical practice. The current use of clinical and instrumental tools for fatigue assessment, and their significance, is discussed. A summary of therapeutic approaches to address fatigue, encompassing pharmacological treatment and physical exercise, is also overviewed.

Neuromotor Rehabilitation Interventions After Pediatric Stroke: A Focused Review

Pediatric stroke is a condition that often results in life-long motor, cognitive, or sensory deficits for children. The purpose of this focused review is to compile the most recent literature on pediatric stroke neuromotor interventions and summarize evidence for use by rehabilitation providers and researchers. Terms including stroke, pediatric, and neuromotor were searched with appropriate MeSH terms. Information was collected regarding interventions conducted and outcome measures used for each article. Interventions and outcome measures were organized based on ICF components (Body Structure and Function, Activity, Participation, and Environmental Factors). 16 articles were included after full-text screens. From these 16 articles, a large majority of them included some form of neuromodulation as a part of intervention. Results identified a potentially problematic gap between domains addressed by interventions and measured by outcomes, with a need to include more expansive outcome measures in research studies. There are several areas of potential growth in pediatric stroke literature. Research studies should be precise when describing included samples. As interventions for pediatric stroke shift toward neuromodulation and other neurologic treatments, there is a need for well-defined populations, both clinically in the community as well as in research studies. There is also a need for US guidelines for rehabilitation after pediatric stroke. Overall, the trend in the literature seems to suggest that combining some form of neuromodulatory technique with existing recommended rehabilitation technique (ex: CIMT) may promote overall recovery for children after stroke, though further research is needed.

Saliva Fatigue Biomarker Index As a Marker for Severe Myalgic Encephalomyelitis/Chronic Fatigue Syndrome in a Community Based Sample

OBJECTIVE

The prevalence of pediatric Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) has been estimated from an ethnically and sociodemographically diverse community-based random sample of 10,119 youth aged 5-17. A team of physicians made a final diagnosis of ME/CFS if the participants met criteria for up to three selected case definitions following medical and psychiatric evaluations. We assessed whether a salivary biomarker of fatigue could identify youth with ME/CFS.

STUDY DESIGN

We examined the ratio of the concentrations of 2 peptide fragments in saliva, referred to as the Fatigue Biomarker Index (FBI), in participants from our study diagnosed with ME/CFS (n=59) and matched controls (n=39).

RESULTS

Significant overall differences were found in the FBI between those participants with severe ME/CFS and those with ME/CFS and the controls.

CONCLUSIONS

If confirmed in other populations, the FBI could serve as an objective test to aid in the diagnosis of severe ME/CFS.