Idiopathic chronic fatigue

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Source: Chronic fatigue syndrome: A review (Balachander et al.) 2014.[1]

Idopathic chronic fatigue or ICF is long lasting chronic fatigue that is not caused by an underlying medical condition or psychiatric illness.[2] Patients with idopathic chronic fatigue do not fulfill the criteria for chronic fatigue syndrome (CFS).[3] The word idiopathic reflects an unknown underlying cause, meaning that the chronic fatigue is a medically unexplained symptom.[2][4]

Differences from chronic fatigue syndrome[edit | edit source]

Chronic Fatigue Syndrome (CFS) is a distinct neurological disease, and is not the same as chronic fatigue, or long-term fatigue with no known cause (ICF).[3]Source: Son, C-G (2019). Differential diagnosis between “chronic fatigue” and “chronic fatigue syndrome”. Integrative Medicine Research, 8(2), 89-91. Suggested algorithm for chronic fatigue, ICF and CFS. License: CC-BY-ND-NC.
  • Idiopathic chronic fatigue is not a distinct illness or disease
  • Idiopathic chronic fatigue only requires the symptom of chronic fatigue[3]
  • Idiopathic chronic fatigue is more common in the elderly and becomes more common with ageing[2]
  • Chronic fatigue syndrome is a neurological disease
  • Chronic fatigue syndrome has a multi-systemic illness with a wide variety of symptoms, which may include immune symptoms, cardiovascular symptoms, post-exertional malaise, headaches or migraines, and chronic pain.[3][5]
  • Chronic fatigue syndrome is most common in teenagers and working age adults
  • Idiopathic chronic fatigue is generally considered less disabling[2]

Notable studies[edit | edit source]

  • 2016, Metabolic Rate and Perceived Exertion of Walking in Older Adults With Idiopathic Chronic Fatigue[2](Full text)
  • 2019, Differential diagnosis between “chronic fatigue” and “chronic fatigue syndrome”[3](Full source)

See also[edit | edit source]

Learn more[edit | edit source]

References[edit | edit source]

  1. 1.01.1 Singh, Shubh Mohan; Sarkar, Siddharth; Rao, Pradyumna; Balachander, Srinivas (Jul 1, 2014). "Chronic fatigue syndrome: A review". Medical Journal of Dr. D.Y. Patil University. 7 (4): 415. doi:10.4103/0975-2870.135252. ISSN 0975-2870. 
  2. 2.02.12.22.32.4 Manini, Todd M.; Knaggs, Jeffrey D.; Corbett, Duane B.; Valiani, Vincenzo (Nov 1, 2016). "Metabolic Rate and Perceived Exertion of Walking in Older Adults With Idiopathic Chronic Fatigue". The Journals of Gerontology: Series A. 71 (11): 1444–1450. doi:10.1093/gerona/glw108. ISSN 1079-5006. 
  3. 3.03.13.23.33.4 Son, Chang-Gue (Jun 2019). "Differential diagnosis between "chronic fatigue" and "chronic fatigue syndrome"". Integrative medicine research. 8 (2): 89–91. doi:10.1016/j.imr.2019.04.005. ISSN 2213-4220. PMID 31193269. 
  4. 4.04.1 Sigurdsson MD, Alex F. (Nov 8, 2017). "19 Important Causes of Fatigue - Tiredness and Chronic Fatigue Explained". www.docsopinion.com. Retrieved Jan 30, 2019. 
  5. Fukuda, K.; Straus, S. E.; Hickie, I.; Sharpe, M. C.; Dobbins, J. G.; Komaroff, A. (Dec 15, 1994). "The chronic fatigue syndrome: a comprehensive approach to its definition and study. International Chronic Fatigue Syndrome Study Group" (PDF). Annals of Internal Medicine. American College of Physicians. 121 (12): 953–959. ISSN 0003-4819. PMID 7978722. 

chronic fatigue syndrome (CFS) - A controversial term, invented by the U.S. Centers for Disease Control, that generally refers to a collection of symptoms as “fatigue”. There have been multiple attempts to come up with a set of diagnostic criteria to define this term, but few of those diagnostic criteria are currently in use. Previous attempts to define this term include the Fukuda criteria and the Oxford criteria. Some view the term as a useful diagnostic category for people with long-term fatigue of unexplained origin. Others view the term as a derogatory term borne out of animus towards patients. Some view the term as a synonym of myalgic encephalomyelitis, while others view myalgic encephalomyelitis as a distinct disease.

chronic fatigue (CF) - Persistent and abnormal fatigue is a symptom, not an illness. It may be caused by depression, multiple sclerosis, fibromyalgia, chronic fatigue syndrome or many other illnesses. The term "chronic fatigue" should never be confused with the disease chronic fatigue syndrome.

chronic fatigue syndrome (CFS) - A controversial term, invented by the U.S. Centers for Disease Control, that generally refers to a collection of symptoms as “fatigue”. There have been multiple attempts to come up with a set of diagnostic criteria to define this term, but few of those diagnostic criteria are currently in use. Previous attempts to define this term include the Fukuda criteria and the Oxford criteria. Some view the term as a useful diagnostic category for people with long-term fatigue of unexplained origin. Others view the term as a derogatory term borne out of animus towards patients. Some view the term as a synonym of myalgic encephalomyelitis, while others view myalgic encephalomyelitis as a distinct disease.

chronic fatigue syndrome (CFS) - A controversial term, invented by the U.S. Centers for Disease Control, that generally refers to a collection of symptoms as “fatigue”. There have been multiple attempts to come up with a set of diagnostic criteria to define this term, but few of those diagnostic criteria are currently in use. Previous attempts to define this term include the Fukuda criteria and the Oxford criteria. Some view the term as a useful diagnostic category for people with long-term fatigue of unexplained origin. Others view the term as a derogatory term borne out of animus towards patients. Some view the term as a synonym of myalgic encephalomyelitis, while others view myalgic encephalomyelitis as a distinct disease.

The information provided at this site is not intended to diagnose or treat any illness.
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