The exact causes of Chronic Fatigue Syndrome are not known. It is believed to be caused by a combination of internal as well as external factors. Some individuals are believed to be born with a predisposition for CFS. This is the chief factor of causes of Chronic Fatigue Syndrome.
Some of the factors that have been implicated as causes of Chronic Fatigue Syndrome are:
- Viral infections: Many people suffering from CFS have a history of recent viral infection. Therefore, there is a theory that viruses might trigger the disorder. Some of the common suspects included Epstein-Barr, human herpesvirus 6, etc.. No definitive link between the two has yet been found.
- Immune system problems: There is some research suggesting that individuals with CFS have some impairment in their immune system. However, everyone with immune system problems does not get CFS. Similarly, all individuals with CFS do not have immune system problems.
- Hormonal imbalances: A few studies have shown that some people with CFS also have hormonal imbalances in their hypothalamus, pituitary gland or adrenal glands. However, their significance is still unknown.