Brodwall, Elias Myrstad, Pedersen, Maria, Asprusten, Tarjei Tørre et al. · Scandinavian journal of pain · 2020 · DOI
This study looked at pain symptoms in teenagers who developed chronic fatigue after a common virus infection (Epstein-Barr virus). Researchers compared teenagers who had the virus and became fatigued, those who had the virus but did not become fatigued, and healthy teenagers without the virus. They found that the fatigued group reported significantly more pain symptoms and that the amount of pain they experienced was strongly linked to their quality of life.
Pain is an underrecognized but clinically significant feature of adolescent ME/CFS, and this study quantifies its burden and association with functional impairment. Understanding pain phenotypes in post-viral fatigue may inform targeted interventions and highlight the need for pain management as a core component of ME/CFS care in young patients.
This study does not establish causality or whether pain contributes to fatigue development versus resulting from it. The cross-sectional design captured a single time point (six months post-infection) and cannot determine the temporal relationship between pain onset and fatigue onset. The findings also do not explain the mechanisms underlying pain in post-viral fatigue or whether abnormal pain processing (central sensitization) plays a role, given that pressure pain thresholds were similar across groups.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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