ABSTRACT

This chapter explores differences among patients with Chronic fatigue syndrome (CFS) compared to individuals with psychiatric conditions. Controversy has arisen concerning the actual case definition of CFS, and whether it differentiates those with CFS from other psychiatric conditions. Fatigue is a prevalent symptom in the general population, and prolonged and chronic fatigue is common complaints reported in primary care settings. Prolonged and chronic fatigue are common complaints reported in primary care settings, and many of those reporting prolonged fatigue meet criteria for a psychiatric disorder. The directional relationship between chronic fatigue and psychiatric disorders is unclear. Both fatigue and psychiatric conditions, particularly depression and anxiety, are common in many medical conditions. It is possible for some individuals to experience a period of fatigue that leads to the development of a psychiatric condition due to the physical misery of fatigue or reduced ability to meet life goals.