The symptoms of chronic fatigue syndrome (CFS) vary from person to person, and generally there may be good periods and bad periods.
There may be times when your symptomsimprove and you'll be able to do many normal everyday activities. At other times, symptoms may flare up and get worse, affecting your daily life.
The main symptom of CFS is persistent physical and mental fatigue (exhaustion). This doesn'tgo away with sleep or rest and limits your usual activities.
Most people with CFS describe this fatigue as overwhelming and a different type of tiredness from whatthey've experienced before.
Exercising can make symptoms worse. This is called post-exertional malaise, or "payback". The effect of this is sometimes delayed for example, if you were to play a game of sport, the resulting fatigue may not develop untila few hours afterwards, or even the next day.
People with severe CFSare unable to do any activities themselves or can only carry outsimple daily tasks, such as brushing their teeth. They're sometimes confined to their bed and areoften unable to leave their house.
There areother common symptoms as well as fatigue,although most people don't have all of them. They include:
Chronic fatigue syndrome (CFS) causes persistent fatigue (exhaustion) that affects everyday life and doesn't go away with sleep or rest.
The symptoms of chronic fatigue syndrome (CFS) vary from person to person. There are often periods when they are better or worse.
Exactly what causes chronic fatigue syndrome (CFS) is unknown, but there are several theories.