Chronic Fatigue Syndrome
(CFS; Chronic Fatigue and Immune Dysfunction Syndrome)
DefinitionChronic fatigue syndrome (CFS) is a condition that causes chronic, debilitating fatigue that is not relieved by bed rest or explained by any other medical condition. People who have CFS perform at a significantly lower level compared to their activity prior to the onset of the illness.
CausesThe cause of CFS is unknown. Some believe there may be a link between CFS and stress, the immune system, toxins, the central nervous system, or activation of a latent virus.
|Central Nervous System and Organs Including Endocrine Glands|
|Copyright © Nucleus Medical Media, Inc.|
Risk FactorsWomen are more likely to have CFS than men. It is also more common in people between 25-55 years of age.
SymptomsSymptoms vary from person to person. They may include:
- Unexplained, new onset, persistent fatigue that is not relieved with bed rest and often worsens with physical or mental activity
- Unexplained muscle aches
- Joint pain without swelling or redness over 6 months
- Headaches over 6 months
- Trouble with short-term memory or concentration
- Forgetfulness or confusion
- Irritability, anxiety , panic attacks, mood swings, or depression
- Sore throat over 6 months
- Tender lymph nodes over 6 months
- Trouble sleeping or not feeling refreshed after sleep over 6 months
- Visual disturbances—eyes sensitive to light, blurring, pain
- Reduced activities—social, job-related, educational, and personal
- Lightheadedness, balance problems, or fainting
- Chills and night sweats
- Allergies or sensitivities to foods , chemicals, odors, medications, or noise
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