According to a web page I read, a 2001 study found that although sex abuse has a positive correlation with idiopathic chronic fatigue, it has a negative correlation with CFS. The article cited Taylor RR, et al. Sexual abuse, physical abuse, chronic fatigue, and chronic fatigue syndrome: a community-based study. J Nerv Ment Dis. Oct 2001;189(10):709-15.
BTW, the reason I am posting this is in case people want to counter the CDC information about this.
At the University of Illinois in Chicago, researchers investigated the history of abuse and the correlation it has with CFS. They looked at childhood sexual, physical, and death threat abuse and the predictions of adulthood medical and psychiatric conditions, including chronic fatigue syndrome. They also examined suggestions that interpersonal abuse occurred in CFS patients. To examine the relationship between abuse and CFS, the researchers used Multinomial logistic regression. The outcome illustrated that sexual abuse was more common in patients with idiopathic chronic fatigue, relating to a psychiatric condition, and chronic fatigue explained by a medical condition, than it was common in healthy controls. The types of abuse did not directly predict the condition CFS. After a closer examination, the researchers found that significantly fewer CFS sufferers reported the abuse compared to controls.