Abstract Post exertional muscle fatigue is a key feature in Chronic Fatigue Syndrome (CFS). Abnormalities of skeletal muscle function have been identified in some but not all patients with CFS. To try to limit potential confounders that might contribute to this clinical heterogeneity, we developed a novel in vitro system that allows comparison of AMP…
Because it is not possible to differentiate completely between adverse neural tension and strain in muscles, fascia, and other soft tissues, we use the more general term “neuromuscular strain.”
Neuromuscular restrictions are common in CFS, and many symptoms of CFS can be reproduced by selectively adding neuromuscular strain during the examination.
In this paper we submit that neuromuscular strain is a previously unappreciated peripheral source of sensitizing input to the nervous system, and that it contributes to the pathogenesis of CFS symptoms, including cognitive dysfunction.
Muscle biopsies of 50 patients with postviral CFIDS .
Mild to severe atrophy of type II fibres in 39 biopsies, with a mild to moderate excess of lipid.
35 of these showed branching and fusion of mitochondrial cristae.
Mitochondrial degeneration was obvious in 40 of the biopsies with swelling, vacuolation, myelin figures and secondary lysosomes.
Control biopsies: even mild changes were rarely detected.