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The exact cause of chronic fatigue syndrome (CFS) is unknown. Some researchers suspect it may be caused by a virus, such as Epstein-Barr virus or human herpes virus-6 (HHV-6). However, no specific virus has been identified as the cause.
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CFS is diagnosed by evaluating symptoms and eliminating other causes of fatigue. Doctors carefully question patients about their symptoms, any other illnesses they have had, and medications they are taking. They also conduct a physical examination...
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There is no single known cause for CFS. Studies have pointed to several different conditions that might be responsible. These include: viral infections chemical toxins allergies immune abnormalities psychological disorders Although the cause is st...
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