Chronic Fatigue Syndrome Definition

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Definition: Chronic Fatigue Syndrome (CFS), which is also sometimes referred to as Chronic Fatigue Immune Dysfunction Syndrome (CFIDS) or Myalgic Encephalomyelitis (M.E.), is a condition characterized by the primary symptom of a prolonged, persistent debilitating fatigue not relieved by rest and not directly caused by other conditions.

In general, a diagnosis for chronic fatigue syndrome requires that the tiredness is severe enough for at least a 50% decrease in the patient’s ability to participate in ordinary activities.

The Centers for Disease Control (CDC) describes CFS as a distinct disorder with specific symptoms and physical signs, based on the exclusion of other possible causes. The exact cause of CFS is unknown. Some research theories suspect an association with a virus, such as Epstein-Barr virus or human herpes virus-6 (HHV-6); however, a distinct and direct viral cause has not been positively identified. Some studies have shown that chronic fatigue syndrome may be caused by inflammation nervous system pathways resulting from an immune response or autoimmune process. CFS also can occur when a viral illness is complicated by an inadequate or dysfunctional immune response.

For some, the condition can occur following an injury, infection preceding or following surgery (e.g., peritonitis), or other traumatic body events that weakens or adversely affects the immune system. Age, environment, genetic disposition, prior illness, or stress may also be factors.

Pronunciation: kron ik fah teeg

Also Known As: Chronic Fatigue, Chronic Fatigue Immune Dysfunction Syndrome (CFIDS), Myalgic Encephalomyelitis (M.E.), Environmental Illness, Autoimmune Illness, Chronic Epstein Barr Syndrome

Alternate Spellings: CFS, CFIDS, CF

Symptomology: Someone with Chronic Fatigue Syndrome suffers from tiredness and body weakness that is not relieved by rest and is described as being worse than the fatigue associated with the flu or chemotherapy.

Whether you refer to it as Chronic Fatigue Syndrome (CFS), Chronic Fatigue Immune and Dysfunction Syndrome (CFIDS), or Myalgic Encephalomyelitis (M.E.), the name alone cannot convey the devastation brought about by having to cope with this condition. The “fatigue” in the name refers to much more than just being tired. Those who suffer from this condition experience a fatiguing condition similar to how one feels when you have the flu. Only with the flu, you eventually get better. Imagine dealing with those muscle aches, the weakness, headaches, and other symptoms on a daily basis and you know how someone with CFS feels on a good day.

For detailed information, see: What is Chronic Fatigue Syndrome?

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1. What is Chronic Fatigue Syndrome
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3. Disabling Chronic Illness Quote Designs
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5. Setting Goals While You Cope with a Chronic Illness

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