Response to: exercise performance and chronic pain in chronic fatigue syndrome: the role of pain catastrophizing.

摘要

Nijs and colleagues [1] have found various correlations; however, they have not proven the direction of causation or shown what can be done with the information. As is well known, pain can have a protective effect; conditions involving a lack of sensitivity to pain can cause all sorts of extra complications. Knowledge of why patients with chronic fatigue syndrome (CFS) experience pain following exercise is far irom complete. However, studies in recent years such as by Jammes [2] and Sorensen [3] give possible clues that something abnormal biochemically occurs.