Chronic fatigue syndrome (CFS) is a poorly understood
condition that develops mainly in adults between the ages of 20 and 40. Its
main symptoms include:
- Persistent fatigue that interferes with daily
activities and lasts longer than 6 months.
- Mild
fever.
- Sore throat.
- Swollen
glands.
- Difficulty concentrating and short-term memory
loss.
- Sleep disturbance.
- Irritability.
- A
noticeable decrease in physical activity.
It was once believed that chronic fatigue syndrome was caused by
long-term infection with the
Epstein-Barr virus (EBV). However, research has shown
that chronic fatigue syndrome and EBV infection are two different illnesses and
EBV does not cause chronic fatigue syndrome.
For more information, see the topic Chronic Fatigue Syndrome.