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With no known definite cause, Chronic Fatigue Syndrome is a popular name

for a disorder or group of disorders with varying debilitating effects on

the individual which persist for at least 6 months. According to some

sources, the syndrome results from an infection. As of yet though, the

syndrome is not yet fully understood although it is quite a common

disorder.

Onset
The onset of CFS is usually characterized by sudden occurrence of symptoms

which are somewhat similar to the symptoms accompanying flu. It is believed

to begin with an infection caused by non-viral and viral pathogens which

trigger subsequent symptoms. In a smaller fraction of patients, the onset

begins after exposure to prolonged extreme levels of stress. Thus, it is

believed that CFS can begin either from high levels of stress or infection.

Current studies are focused on investigating on these causation models.

Causes
Although there are no definite causes to chronic fatigue syndrome, there

are however, known conditions that are closely related to the development

of the syndrome. They are as follows:

1. Chlamydia pneumoniae, a bacterium which causes pneumonia and related

illness.

2. EBV or Epstein-Barr virus which causes mononucleosis or the kissing

disease, a very common respiratory disease that has symptoms resembling

flu.

3. Onset of serious case of bronchitis and diarrhea.

4. Continuous subjection to stress, both physical and mental.

Symptoms
There are two criteria in determining the presence of Chronic Fatigue

Syndrome. They are as follows:

1. Unexplainable chronic fatigue is experienced for more than 6 months and

all other diseases and disorders that can lead to long term experience of

fatigue have been ruled out by your health care provider. This fatigue does

not root from physical exertion and cannot be relieved by rest.

2. The presence of four of the following symptoms: a) decreased cognitive

function or chronic impairment of short-term memory, b) fatigue that is not

relieved through rest, c) muscle pains or myalgia, d) severe headaches, e)

prolonged sickness and exhaustion, f) recurring and frequent sore throat,

g) joint pains without redness or inflammation, and f) abnormal lymph nodes

with notable tenderness.

Treatment Options
There are several ways of managing the disorder but there is no one

universal treatment option that is recommended for all patients. For some

patients, dietary changes, changes in lifestyle, use of pain killers,

physiotherapy, medications and Complementary and Alternative Medicine work.

The most common unconventional treatment modalities are CBT or Cognitive

Behavioral Therapy and Graded Exercise Therapy.

Prognosis
The average recovery rate of untreated patients is pegged at 5%. On the

other hand, those patients who have received a number of treatments are 40%

more likely to benefit from full recovery.

Occurrence
Due to the absence of concrete and definite parameters for identifying

people with CFS, it is quite hard to determine the exact number of people

who are affected by this disorder. Estimates range from 75-420 people in

every 100,000 people have this disorder. Women are more susceptible to

developing this disorder by 20% although there are strong indications that

this disparity is due to unreported cases among men.

The syndrome occurs across all ages but is more common among people aged 40

to 59 years old. It is found across genders and ethnic backgrounds. It is

also seen to run in the family.