What is fatigue: symptoms and causes
Fatigue is a feeling of lingering tiredness, lack of energy, and difficulties in concentration. Short-term fatigue, the feeling of tiredness after stressful events is normal and can recover quickly. Chronic fatigue syndrome (CFS) is long-term fatigue that lasts more than 6 months, characterized with exhaustion and flu-like symptoms such as [...] http://digg.com/u1MHQV
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