myalgic encephalomyelitis/chronic fatigue syndrome

medical condition involving extreme fatigue and a wide range of other symptoms
MedicalCondition class_of_disease Q209733
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Summary

myalgic encephalomyelitis/chronic fatigue syndrome is a class of disease[1]. It ranks in the top 3% of class of disease entities by monthly Wikipedia readership (22,271 views/month).[2]

Key Facts

  • Instance of: symptom or sign[3]
  • Subclass of: syndrome[4], primary immunodeficiency disease[5]
  • ICPC 2 ID: A04[6]
  • Symptoms and signs: post-exertional malaise[7], fatigue[8], sleep disorder[9], other[10]
  • Has cause: NN[11]
  • Topic's main category: Category:Myalgic encephalomyelitis/chronic fatigue syndrome[12]
  • Medical examination: physical examination[13]
  • Possible treatment: pacing[14]
  • Described at URL: https://www.theatlantic.com/health/archive/2022/09/mecfs-chronic-fatigue-syndrome-doctors-long-covid/671518/?utm_source=pocket-newtab-global-en-GB[15], https://www.cdc.gov/me-cfs/causes/index.html[16], https://www.cdc.gov/me-cfs/es/causes/lo-que-causa-em-sfc.html[17]
  • Topic has template: Template:Chronic fatigue syndrome[18]
  • ICD-9-CM: 780.71[19], 780.79[20]
  • Different from: Chronic fatigue[21], neurasthenia[22], fibromyalgia[23]
  • Health specialty: neurology[24], rheumatology[25], immunology[26], epidemiology[27], pediatrics[28], infectious diseases[29], endocrinology[30], physical medicine and rehabilitation[31]
  • Exact match: http://purl.obolibrary.org/obo/DOID_8544[32], http://identifiers.org/doid/DOID:8544[33]
  • On focus list of Wikimedia project: WikiProject Medicine[34]

Why It Matters

myalgic encephalomyelitis/chronic fatigue syndrome has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[35] It is known by 133 alternative names across languages and contexts.[36]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . wikidata.org.
  26. [28] ↑ . wikidata.org.
  27. [29] ↑ . wikidata.org.
  28. [30] ↑ . wikidata.org.
  29. [31] ↑ . wikidata.org.
  30. [32] ↑ . wikidata.org.
  31. [33] ↑ . wikidata.org.
  32. [34] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [35] ↑ . Wikidata sitelinks. wikidata.org.
  3. [36] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). myalgic encephalomyelitis/chronic fatigue syndrome. Retrieved October 20, 2026, from https://4ort.xyz/entity/myalgic-encephalomyelitis-chronic-fatigue-syndrome
MLA “myalgic encephalomyelitis/chronic fatigue syndrome.” 4ort.xyz Knowledge Graph, 4ort.xyz, 20 Oct. 2026, https://4ort.xyz/entity/myalgic-encephalomyelitis-chronic-fatigue-syndrome.
BibTeX @misc{4ortxyz_myalgic-encephalomyelitis-chronic-fatigue-syndrome_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{myalgic encephalomyelitis/chronic fatigue syndrome}}, year = {2026}, url = {https://4ort.xyz/entity/myalgic-encephalomyelitis-chronic-fatigue-syndrome}, note = {Accessed: 2026-10-20}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): myalgic encephalomyelitis/chronic fatigue syndrome — https://4ort.xyz/entity/myalgic-encephalomyelitis-chronic-fatigue-syndrome (retrieved 2026-10-20)

Canonical URL: https://4ort.xyz/entity/myalgic-encephalomyelitis-chronic-fatigue-syndrome · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 6w ago · Mykhal · 2026-09-07 view diff on Wikidata ↗
    Health specialty → neurology, rheumatology, immunology +5
    Image → Petition presentation by M.E Support in Glamorgan 16-9-2014 , Icons symptoms ME CFS.svg
    "/* wbsetclaim-update:2||1 */ Image: Icons symptoms ME CFS.svg"
  2. 8w ago · Kenshiro Taisho · 2026-08-24 view diff on Wikidata ↗
    Health specialty → neurology, rheumatology, immunology +5
    "/* wbsetclaim-create:2||1 */ Health specialty: rheumatology"
  3. 11w ago · Susmuffin · 2026-08-03 view diff on Wikidata ↗
    Harper's tag → chronic-fatigue-syndrome
    Health specialty → neurology, rheumatology, immunology +5
    "/* wbsetclaim-create:1||1 */ Harper's tag: chronic-fatigue-syndrome, Matched to [[:toollabs:mix-n-match/#/entry/289923587|chronic fatigue syndrome (#289923587)]] in [[:toollabs:mix-n-match/#/ca"
  4. 13w ago · KrBot bot · 2026-07-23 view diff on Wikidata ↗
    Health specialty → neurology, rheumatology, immunology +5
    Image → Petition presentation by M.E Support in Glamorgan 16-9-2014 , Icons symptoms ME CFS.svg
    "/* wbremoveclaims-remove:1| */ Health specialty: rheumatology, дублирующееся значение / duplicate value"
  5. 13w ago · Kenshiro Taisho · 2026-07-18 view diff on Wikidata ↗
    Drug or therapy used for treatment → —
    Health specialty → neurology, rheumatology, immunology +5
    Possible treatment → pacing
    "/* wbsetclaim-create:2||1 */ Health specialty: rheumatology"
  6. 15w ago · Henri Grossin · 2026-07-06 view diff on Wikidata ↗
    Has cause → NN
    Health specialty → neurology, rheumatology, immunology +5
    Image → Petition presentation by M.E Support in Glamorgan 16-9-2014 , Icons symptoms ME CFS.svg
    Possible treatment → pacing
    + 2 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ Drug or therapy used for treatment: pacing"
  7. 15w ago · Henri Grossin · 2026-07-06 view diff on Wikidata ↗
    Symptoms and signs → post-exertional malaise, fatigue, sleep disorder +1
    "/* wbremoveclaims-remove:1| */ Symptoms and signs: elevated tumor necrosis factor"
  8. 15w ago · JhealdBatch bot · 2026-07-03 view diff on Wikidata ↗
    Subclass of → syndrome, primary immunodeficiency disease
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/39732|batch #39732]]: rm redundant subclass"
  9. 18w ago · Jindřich Rubeš · 2026-06-12 view diff on Wikidata ↗
    Svkkl authority id → 0239842-syndrom-chronicke-unavy
    "/* wbcreateclaim-create:1| */ Svkkl authority id: 0239842-syndrom-chronicke-unavy, [[:toollabs:quickstatements/#/batch/259494|batch #259494]]"
  10. 22w ago · Twofivesixbot bot · 2026-05-18 view diff on Wikidata ↗
    Instance of → —
    Medical examination → physical examination
    Health specialty → neurology, rheumatology, immunology +5
    Subclass of → —
    + 11 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|14 */ Yso id: 24451, mv to monolingual text names on YSO statements"
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