chronic fatigue syndrome


: a disorder of unknown cause that is characterized by persistent profound fatigue usually accompanied by other symptoms (such as headache and tender lymph nodes) unrelated to any preexisting medical condition
abbreviation CFS

Examples of chronic fatigue syndrome in a Sentence

Recent Examples on the Web What’s happened with the pandemic and with COVID and the emergence of long COVID has been actually a pretty significant development for people with my condition, with chronic fatigue syndrome. Hazlitt, 27 Sep. 2023 Other biological reasons could include unseen disabilities like chronic fatigue syndrome, or any number of chronic conditions that make exercise and dieting difficult. Amber Smith, Discover Magazine, 21 Sep. 2023 The singer revealed that after multiple years of health issues, she’s been diagnosed with chronic fatigue syndrome, also known as Myalgic encephalomyelitis. Starr Bowenbank, Billboard, 13 July 2023 The Daily Rally Sheri Tingey Embraces Her Second Chance The gear designer thought her career was over was stricken with chronic fatigue syndrome. Sarah Vitak, Outside Online, 13 Apr. 2023 One of the main symptoms that affects people with long Covid is chronic fatigue syndrome or myalgic encephalitis (ME) — researchers have estimated that close to 50% of long Covid patients have ME that can persist for several months on end. Anuradha Varanasi, Forbes, 21 Feb. 2023 In fact, an imbalance in the gut, known as dysbiosis, has been associated with the development of anxiety, obesity, diabetes, depression, multiple sclerosis, chronic fatigue syndrome and other disorders, the same paper said. Katie Camero, NBC News, 19 July 2023 For Coda, David Tuller tells the story of Maeve Boothby O’Neill, a bright young woman in England who was diagnosed in 2012 with myalgic encephalomyelitis or ME — also known as chronic fatigue syndrome — after several years of constant exhaustion and poor health. Cheri Lucas Rowlands, Longreads, 1 Feb. 2023 Other causes linked to brain fog include poor sleep, hormonal changes, long Covid, anxiety and depression, certain medications, and a number of conditions, from anaemia and chronic fatigue syndrome to migraines and lupus. Hannah Coates, Vogue, 3 Feb. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'chronic fatigue syndrome.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1947, in the meaning defined above

Time Traveler
The first known use of chronic fatigue syndrome was in 1947

Dictionary Entries Near chronic fatigue syndrome

Cite this Entry

“Chronic fatigue syndrome.” Dictionary, Merriam-Webster, Accessed 3 Oct. 2023.

Medical Definition

chronic fatigue syndrome

: a disorder of uncertain cause that is characterized by persistent profound fatigue usually accompanied by impairment in short-term memory or concentration, sore throat, tender lymph nodes, muscle or joint pain, and headache unrelated to any preexisting medical condition and that typically has an onset at about 30 years of age
abbreviation CFS

called also myalgic encephalomyelitis

More from Merriam-Webster on chronic fatigue syndrome

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