Mechanisms of Persistent Fatigue

Persistent fatigue (PF) is a common symptom across countries and cultures, and an important cause of disability and reduced quality of life. Acute infection is a common trigger of PF, as exemplified by the 'Long COVID' phenomenon. Despite substantial burden for the suffering individuals as well as their next-of-kins, the healthcare systems and the economy, PF is an under-researched field, with scarce knowledge of disease mechanisms as well as treatment and preventive measures. Existing knowledge on PF suggests complex interactions between functional brain processes (as opposed to permanent brain damage), aberrations of the immune system (that normally protects against infection) and the autonomic (or non-voluntary) part of the nervous system (that monitors the internal state of the body and adjusts the function of internal organs). Previous findings have been interpreted in light of two alternative models: A body-to-brain mechanism where disturbances of the immune system are thought to impact on brain functions, and a brain-to-body mechanism where functional brain alteration is regarded the central element whereas aberration of the immune system is seen as a consequence (rather than a cause) mediated through altered activity of the autonomic nervous system. The multinational and collaborative Mechanism of Persistent Fatigue (MAP-FAT) project is determined to scrutinize both these potential brain-body interactions in PF. The main objectives are: a) To determine the relations…

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Vegard Bruun Bratholm Wyller  ·  +4791166681  ·  v.b.b.wyller@medisin.uio.no

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