The exact cause of<unk><unk><unk>  is unknown. However, there an increased risk of developing CFS is observed in patients infected with epstein barr virus or human herpes virus-6 (HHV-6). Additionally, a weak immune system response may also increase the risk of developing CFS.
Chronic fatigue syndrome risk factors
Fibromyalgia risk factors
Amnesia causes
Amnesia risk factors
Delirium risk factors
Heat stroke risk factors
Major depressive disorder risk factors
Anxiety risk factors