Potential triggers include: Viral infections.
Because some people develop chronic fatigue syndrome after having a viral infection, researchers question whether some viruses might trigger the disorder.
Suspicious viruses include Epstein-Barr virus, human herpes virus 6 and mouse leukemia viruses.
How long does chronic fatigue last?
To be diagnosed as chronic fatigue syndrome, symptoms must last for at least six months. Unfortunately, in many people, symptoms persist for years. Symptoms tend to be worst in the first one to two years, and most people’s level of functioning gradually improves over time.
How do you get diagnosed with chronic fatigue?
There is no single test to diagnose chronic fatigue syndrome. The disease is a diagnosis of exclusion, which means that all other conditions and illnesses that cause the symptoms are ruled out. CFS may be diagnosed based on the following: Certain signs and symptoms must be present.
Can chronic fatigue come on suddenly?
Chronic Fatigue Syndrome (CFS) is not the normal ups and downs experienced in everyday life. The early sign of this illness is a strong and noticeable fatigue that comes on suddenly and often comes and goes or never stops. It is not improved by bed rest and may be worsened by physical or mental activity.
What can cause extreme tiredness and fatigue?
Unrelenting exhaustion may be a sign of a condition or an effect of the drugs or therapies used to treat it, such as:
- Acute liver failure.
- Anxiety disorders.
- Chronic fatigue syndrome.
- Chronic infection or inflammation.
- Chronic kidney disease.