Objective: To compare the prevalence of psychiatric disorders in persons with chronic
fatigue syndrome (CFS) identified from the general population and a chronically ill group of …

Background The diagnosis of chronic fatigue syndrome (CFS) in research studies requires
the exclusion of subjects with medical and psychiatric conditions that could confound the …

Abstract purpose: To report the prevalence, clinical features, and diagnostic associations of
the proposed chronic fatigue syndrome (CFS) in a cohort of patients with chronic fatigue and …

Most studies of chronic fatigue syndrome (CFS) have been based on patients recruited from
primary or tertiary care settings. Patients from such settings might not be typical of patients in …

Objective: Chronic fatigue syndrome (CFS) case definitions agree that fatigue must be
unexplained, debilitating and present for at least 6 months, but they differ over …

BACKGROUND: Chronic fatigue syndrome (CFS) is associated with a high use of health
care services. To reduce the related costs for patients and society, it will be useful to know …

Most chronic fatigue syndrome (CFS) studies are based on information about patients from
primary or tertiary care settings. These patients might not be typical of patients in the general …

Background Psychological and immunologic factors both appear to contribute to chronic
fatigue syndrome (CFS). By comparing CFS with other disorders in which fatigue is a …

Background Chronic fatigue syndrome (CFS) presents a challenge for patients, health care
providers, and health insurance groups because of its incapacitating nature, unknown …

Background The lack of standardized criteria for defining chronic fatigue syndrome (CFS)
has constrained research. The objective of this study was to apply the 1994 CFS criteria by …