chronic fatigue syndrome

American  

noun

1. a viral disease of the immune system, usually characterized by debilitating fatigue and flu-like symptoms.

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chronic fatigue syndrome British  

noun

1.  CFS.  another name for myalgic encephalopathy

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chronic fatigue syndrome Scientific  

1. A syndrome characterized by debilitating fatigue and a combination of flulike symptoms such as sore throat, swollen lymph glands, low-grade fever, headache, and muscle pain or weakness. The cause is unknown.

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chronic fatigue syndrome Cultural  

1. A condition characterized by fatigue over an extended period, sometimes accompanied by neurologic abnormalities. The cause of this syndrome is unknown.

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Etymology

Origin of chronic fatigue syndrome

First recorded in 1988

Example Sentences

One of their lowest times was when Dianne was ill with ME, also known as chronic fatigue syndrome, as she recalled there being days where she couldn't get out of bed.

From BBC • Dec. 24, 2025

The study included 57 people diagnosed with chronic fatigue syndrome and 25 healthy individuals of similar age and activity level.

From Science Daily • Nov. 10, 2025

“You’re a kid and you have no authority over anyone,” said Lily, who has POTS, EDS, chronic fatigue syndrome, and chronic pain.

From Slate • Sep. 15, 2025

Ms Beck, 63, who suffers from myalgic encephalomyelitis, which is also known as chronic fatigue syndrome, said she had planned to visit the area soon.

From BBC • Apr. 12, 2025

There are eating disorders, shingles, skin problems, kidney disease, Alzheimer's, senility, mental illness, addictions, chronic fatigue syndrome, aids.

From How and When to Be Your Own Doctor by Solomon, Steve