Undiagnosed and comorbid disorders in patients with presumed chronic fatigue syndrome.
Mariman, An, Delesie, Liesbeth, Tobback, Els et al.·Journal of psychosomatic research·2013
Researchers studied nearly 280 patients who came to a specialized clinic thinking they had ME/CFS, and gave them thorough medical, sleep, and mental health assessments. They found that only about 23% actually had clear-cut ME/CFS; most others had sleep problems like sleep apnea, depression or anxiety, or a combination of these conditions. This suggests that when people feel persistently exhausted, many different medical and mental health issues could be the real cause.