Behan, W M, Behan, P O · Bailliere's clinical neurology · 1993
This review examines whether viral infections might be responsible for causing three conditions: polymyositis, dermatomyositis, and ME/CFS. The authors looked at evidence connecting viruses to these diseases, which cause muscle weakness and persistent fatigue. Understanding these potential links could help explain why some people develop ME/CFS after infections.
This work highlights an important research direction—investigating viral infections as potential triggers for ME/CFS—which remains relevant today as researchers seek to understand disease mechanisms and potential infectious triggers. For patients, understanding whether viruses play a causal role could inform diagnostic approaches and guide research into preventive or therapeutic interventions targeting viral factors.
As a review article, this work does not prove causation between specific viruses and ME/CFS; it assembles existing evidence but cannot establish definitive causal relationships. The study does not provide new primary data and cannot determine whether viral infection is a sufficient cause, necessary cause, or merely an association. It also does not distinguish between acute viral triggers and persistent viral involvement in disease maintenance.
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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