Original sentence: Chronic fatigue syndrome (CFS) is the most common name given to a poorly understood, variably debilitating disorder or disorders of uncertain causation.Gregory House sees a hypochondriac who is convinced he has chronic fatigue syndrome or fibromyalgia.High scores of neuroticism and introversion on psychological tests may suggest a predisposition to developing CFS.In the pilot episode of House, MD, Dr.Instead of confronting the patient's delusions, House gives him candy in a pill bottle.One follow-up study of a cohort of 96 patients suggested that CBT could facilitate full recovery in some patients, with 69% no longer meeting the CDC criteria for CFS.The "pills" work, and the patient returns for a refill.The success of psychiatric treatments suggests CFS may be perpetuated when patients fixate on a physical cause of illness or their symptoms and when exercise is avoided, and a lack of support or the reinforcement of illness behavior from social networks can be associated with delayed recovery.This association may not be universal
Edited sentence: According to some research, a lack of support or the reinforcement of illness behavior from social networks can be associated with delayed recovery.Chronic fatigue syndrome (CFS) is the most common name given to an inadequately understood, variably debilitating disorder or disorders of uncertain causation.High scores of neuroticism and introversion on psychological tests has previously been associated with a greater risk of developing CFS.However, a systematic review on personality and CFS concludes that any association is not definitive.No clinically-meaningful risk factor has been identified.One study of a cohort of 96 patients suggested that CBT could facilitate full recovery in some patients, with 69% no longer meeting the CDC criteria for CFS and 23% reporting a "full recovery".The possible involvement of psychological factors within CFS is both unclear and contentious.Various potential risk factors for developing CFS have been assessed, but "definitive evidence that would be meaningful for clinicians is lacking"