Chronic fatigue syndrome (CFS) patients suffer from disabling physical
and mental fatigue. Circulating autoimmune antibodies may produce sym
ptoms of muscular fatigue by reacting with acetylcholine receptors or
calcium binding channels. They can also produce mental status changes
by reacting with central nervous system (CNS) antigens. We thoroughly
investigated the presence of circulating antimuscle and anti-CNS antib
odies in 10 CFS patients and 10 controls. We were unable to detect any
pathogenic antibodies.