Symptoms of Chronic Fatigue Syndrome (CFS)
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Symptoms of CFS may occur suddenly after you have a ]]>cold]]>, ]]>bronchitis]]>, hepatitis, or an intestinal infection. Symptoms may follow a bout of infectious ]]>mononucleosis]]> (mono), which is caused by a virus that temporarily saps your energy. CFS can also begin after a period of high stress. Sometimes it develops more gradually, with no clear illness or other event noted as a starting point.
Unlike flu symptoms that usually go away in a few days or weeks, symptoms of CFS persist or recur in cycles for at least six months in 50% of time. CFS symptoms vary from person to person. Since 1994, the guidelines for diagnosing CFS include, in addition to a six-month history of fatigue that is not relieved with bed rest, at least four of the following eight symptoms:
- Muscle aches
- Joint pain without swelling or redness
- Trouble with short-tern memory or concentration, forgetfulness, or confusion
- Sore throat
- Tender lymph nodes
- Trouble sleeping or not feeling rested after sleep
- Worsening symptoms 24 hours or more after exercise
In addition to the eight diagnostic symptoms, patients with CFS can also suffer from:
- Mood swings
- Chronic mononucleosis
- ]]>Fibromyalgia]]> syndrome
- Low blood pressure
- Sensitivity to many chemicals
Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/ .
Devanur LD, Kerr JR. Chronic fatigue syndrome. J Clin Virol. 2006;37:139-150.
National Institute of Allergy and Infectious Diseases website. Available at: http://www3.niaid.nih.gov/ .
Prins JB, van der Meer JW, Bleijenberg G. Chronic fatigue syndrome. Lancet. 2006;367:346-355.
Last reviewed February 2009 by ]]>Jill D. Landis, MD ]]>
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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