Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a debilitating chronic
disease of unknown aetiology that is recognized by the World Health Organization (WHO) …

Objectives: Although fatigue is experienced by everyone, its definition and classification
remains under debate. Methods: A review of the previously published data on fatigue …

This study assessed the prevalence and determinants of fatigue in a population-based
cohort of non-hospitalized subjects 1.5–6 months after COVID-19. It was a mixed postal/web …

Summary Background Post-COVID-19 syndrome (PCS) is characterised by a wide range of
symptoms, primarily fatigue and exertion intolerance. While disease courses in the early …

The complexities of the chronic fatigue syndrome and the methodologic problems
associated with its study indicate the need for a comprehensive, systematic, and integrated …

Objectives: Fatigue is a common feature of physical and neurological disease as well as
psychiatric disorders, often reported amongst patients' most severe and distressing …

The term functional somatic syndrome has been applied to several related syndromes
characterized more by symptoms, suffering, and disability than by consistently demonstrable …

OBJECTIVE: Chronic fatigue syndrome is an illness characterized by disabling fatigue of at
least 6 months, accompanied by several other symptoms. This review summarizes the …

Background: Migraine is frequently associated with nonheadache symptoms before, during,
and after the headache. Premonitory symptoms occurring before the attack have not been …

Population norms for interpretation of fatigue measurements have been lacking, and the
sociodemographic associations of fatigue are poorly documented. A random sample of 3500 …