adverse effect

undesired harmful effect resulting from a medication or other medical intervention
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adverse effect

Summary

adverse effect ranks in the top 2% of general entities by monthly Wikipedia readership (354 views/month).[1]

Key Facts

  • adverse effect is a type of side effect[2].
  • adverse effect is a type of iatrogenesis[3].
  • adverse effect's ICPC 2 ID is recorded as A87[4].
  • adverse effect's topic's main category is recorded as Category:Complications of surgical and medical care[5].
  • adverse effect's described by source is recorded as The Unified Medical Dictionary (Librairie du Liban, 2009)[6].
  • adverse effect's described by source is recorded as Baggio[7].
  • adverse effect's topic has template is recorded as Template:Medical harm[8].
  • adverse effect's ICD-9-CM is recorded as 995.89[9].
  • adverse effect's different from is recorded as adverse event[10].
  • adverse effect's health specialty is recorded as pharmacology[11].
  • adverse effect's P14541 is recorded as rsAnJ[12].

Body

Definition and Type

Recorded subclass of include side effect[2] and iatrogenesis[3].

Why It Matters

adverse effect ranks in the top 2% of general entities by monthly Wikipedia readership (354 views/month).[1] It has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[13] It is known by 59 alternative names across languages and contexts.[14]

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [13] ↑ . Wikidata sitelinks. wikidata.org.
  3. [14] ↑ . 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). adverse effect. Retrieved October 5, 2026, from https://4ort.xyz/entity/adverse-effect
MLA “adverse effect.” 4ort.xyz Knowledge Graph, 4ort.xyz, 5 Oct. 2026, https://4ort.xyz/entity/adverse-effect.
BibTeX @misc{4ortxyz_adverse-effect_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{adverse effect}}, year = {2026}, url = {https://4ort.xyz/entity/adverse-effect}, note = {Accessed: 2026-10-05}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): adverse effect — https://4ort.xyz/entity/adverse-effect (retrieved 2026-10-05)

Canonical URL: https://4ort.xyz/entity/adverse-effect · 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. 15h ago · ~2026-53690-15 · 2026-10-05 view diff on Wikidata ↗
    Described by source → The Unified Medical Dictionary (Librairie du Liban, 2009), Baggio
    Claims rich → —
    "/* wbsetclaim-create:2||1 */ [[Property:P1343]]: [[Q3632863]]"
  2. 2d ago · فيصل · 2026-10-03 view diff on Wikidata ↗
    Described by source → The Unified Medical Dictionary (Librairie du Liban, 2009), Baggio
    Wikipedia languages → ['ar', 'ca', 'cs', 'el', 'en', 'es', 'et', 'eu', 'fa', 'fr', 'id', 'ja', 'ko', '
    Claims rich → —
    "/* wbsetclaim-create:2||1 */ [[Property:P1343]]: [[Q113466993]]"
  3. 12w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → rsAnJ
    Topic has template → Template:Medical harm
    Aliases → —
    Different from → adverse event
    + 4 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.