Chronic fatigue syndrome (CFS) is a name for severe fatigue, for which no medical cause can be found. People with CFS are, due to fatigue, no longer able to live the life they were used to. For example, they can no longer exercise, not go to school and have no contact with friends or girlfriends anymore.


Despite extensive scientific research, no unmistakeable explanation for the cause of chronic fatigue syndrome has been found. The research is still in progress. Some researchers and doctors look for a purely physical cause. Others assume that psychological and psychosocial causes play a role as well.


Chronic fatigue syndrome is a complex problem. It’s a condition with severe fatigue and a large number of physical and mental symptoms.
The most obvious signs and symptoms are:

In addition, a large number of other symptoms may be present. CFS doesn’t affect each patient in the same way. The symptoms and the intensity of the condition can vary considerably from person to person and in the same person from day to day or even from hour to hour.


It is generally found that we speak of chronic fatigue syndrome when a person suffers from persistent or recurrent fatigue for at least 6 months, for which no physical explanation can be found. Such fatigue should be new, should not be the result of continuous effort, hardly improves with rest and restricts functioning severely.


On the treatment of CFS is no consensus, there is a lot of experimenting with medicines, supplements, psychotherapy, etc.
Several widely used treatment methods are:

In practice, a combination of physical, mental and psychosocial treatment methods appears to be most effective. This requires a multidisciplinary approach, in which internists, neuropsychiatrists, physical therapists and other paramedical disciplines, partners and family members play a role.


The course of CFS is variable and unpredictable. In most cases, the disease shows over the years, after the initial phase, a pattern of deterioration and improvement. The problems usually last for three to nine years. Most patients gradually become slightly better, however, a significant minority remains severely affected.