Chronic fatigue syndrome (CFS) may be a long-term illness with a good range of symptoms. the foremost common symptom is extreme tiredness. CFS is additionally referred to as ME, which stands for myalgic encephalomyelitis. Chronic fatigue syndrome (CFS) may be a complicated disorder characterized by extreme fatigue that lasts for a minimum of six months which cannot be fully explained by an underlying medical condition. The fatigue worsens with physical or mental activity, but doesn't improve with rest.

Other characteristic symptoms include:

Sleep that may not refreshing
Difficulties with memory, focus and concentration
Dizziness that worsens with moving from lying down or sitting to standing

Symptoms

Symptoms of chronic fatigue syndrome can vary from person to person, and therefore the severity of symptoms can fluctuate from day to day. Signs and symptoms may include:

Problems with memory or concentration
Sore throat
Fatigue
Unexplained muscle or joint pain
Dizziness that worsens with moving from lying down or sitting to standing
Unrefreshing sleep
Headaches
Enlarged lymph nodes in your neck or armpits
Extreme exhaustion after physical or mental exercise

Causes

The explanation for chronic fatigue syndrome remains unknown. Some people could also be born with a predisposition for the disorder, which is then triggered by a mixture of things . Potential triggers include:

Viral infections. Because some people develop chronic fatigue syndrome after having a virus infection , researchers question whether some viruses might trigger the disorder. Suspicious viruses include the Epstein-Barr virus , human herpes 6. No conclusive link has yet been found.

Immune system problems. The immune systems of individuals who have chronic fatigue syndrome appear to be impaired slightly, but it's unclear if this impairment is enough to truly cause the disorder.

Hormonal imbalances. people that have chronic fatigue syndrome also sometimes experience abnormal blood levels of hormones produced within the hypothalamus, pituitary glands or adrenal glands. But the importance of those abnormalities remains unknown.

Physical or emotional trauma. Some people report that they experienced an injury, surgery or significant emotional stress shortly before their symptoms began.