{ "model": { "rank": 15761, "code": "thing-q1166142", "model_id": "vr.tr.erythema", "name": "erythema", "purpose": "Let an agent explain erythema in general terms, relay causes, patterns and associated conditions from dermatology sources, route warning signs to urgent care, describe the named patterns, and distinguish erythema from flushing, purpura, rash as a broader term and cellulitis, without diagnosing individuals.", "family": "Thing Registry", "category": "Information and virtual systems", "status": "research-draft", "kind": "thing", "plane": "INF", "domain": "INF.KNW", "industry": "", "version": "", "url": "/models/thing/q1166142/", "tier": 2, "score": 33, "payload": { "layer": "wikidata", "aliases": [ "necrolytic migratory erythema", "erythema annulare centrifugum", "palmar erythema", "niacin flush", "keratolytic winter erythema", "mercurial erythema", "Annular erythema of infancy", "Figurate erythema", "Generalized erythema", "erythema of acral regions", "Ulerythema", "Erythrosis", "erythema marginatum", "Erythema palmare hereditarium" ], "aliasCount": 14, "merged": 14, "knownIn": 33, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.erythema", "source": { "dataset": "wikidata", "item": "Q1166142", "url": "https://www.wikidata.org/wiki/Q1166142", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-14T00:45:21Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 4, "engine": "claude" }, "metaModel": { "id": "THING-Q1166142", "registryId": "vr.tr.erythema", "name": "erythema", "version": "0.2.0-wave.4", "entryKind": "thing", "family": "Thing Registry", "domain": [ "INF.KNW" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q1166142/", "model": { "registry_id": "vr.tr.erythema", "name": "erythema", "purpose": "Let an agent explain erythema in general terms, relay causes, patterns and associated conditions from dermatology sources, route warning signs to urgent care, describe the named patterns, and distinguish erythema from flushing, purpura, rash as a broader term and cellulitis, without diagnosing individuals.", "definition": "Redness of the skin or mucous membranes caused by increased blood flow in dilated superficial capillaries, a sign of many conditions including inflammation, infection, sunburn, allergy and drug reactions, with patterns the registry aliases name such as palmar erythema, seen in liver disease and pregnancy, necrolytic migratory erythema, associated with glucagon-secreting tumours, erythema annulare centrifugum, with expanding rings, niacin flush, a harmless but uncomfortable reaction to nicotinic acid, keratolytic winter erythema, an inherited peeling condition described in South Africa, and mercurial erythema from mercury exposure; the registry files it under flushing, which is a related but narrower transient sign. Rapidly spreading redness with fever, blistering, peeling or mucous membrane involvement needs urgent medical care.", "what_it_is_for": "Not applicable; a clinical sign.", "affordances": [ "explain causes and mechanism", "relay associated conditions", "describe named patterns", "route warning signs" ], "distinguishing_features": [ "Blanching redness", "Many causes", "Distinctive patterns", "Sign rather than disease" ], "appearance": "Red or pink skin that blanches when pressed, sometimes warm or in rings or patches.", "visual_identification": [ "Skin redness from dilated capillaries", "Necrolytic migratory erythema, erythema annulare centrifugum, palmar erythema, niacin flush, keratolytic winter erythema, mercurial erythema", "Flushing is transient facial redness; purpura does not blanch; rash is a broader term; cellulitis is a deeper infection with swelling" ], "physical_properties": [ { "quantity": "blanching test", "typical_range": "erythema fades under pressure", "unit": "note", "note": "purpura does not" }, { "quantity": "minimal erythema dose", "typical_range": "UV dose causing just perceptible redness", "unit": "note", "note": "phototesting" }, { "quantity": "registry parent", "typical_range": "flushing", "unit": "note", "note": "narrower related sign" } ], "families_and_kinds": [ "inflammatory erythema", "infectious erythema such as erythema migrans", "drug and toxic erythema", "reactive erythemas such as erythema multiforme", "physiological erythema" ], "related_models": [ { "relation": "is related to", "target": "flushing", "why": "registry parent" }, { "relation": "is a sign of", "target": "inflammation", "why": "" }, { "relation": "includes", "target": "palmar erythema", "why": "" }, { "relation": "is contrasted with", "target": "purpura", "why": "" } ], "identifiers": [], "standards_and_regulation": [ "Dermatology clinical guidelines", "Occupational limits for mercury exposure" ], "failure_modes_and_hazards": [ "Missing Stevens-Johnson syndrome or sepsis signs", "Missing Lyme disease erythema migrans", "Self-diagnosis from photos" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What erythema is.", "rationale": "Science.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "Is redness spreading fast with fever, blistering, peeling skin, sore mouth or eyes, or breathing difficulty, in which case seek emergency care?", "kind": "boundary" }, { "text": "What is erythema, and how does it differ from flushing, purpura, rash and cellulitis?", "kind": "definition" } ] } ] }, { "id": "patterns", "name": "Patterns", "description": "Named patterns.", "findings": [ { "id": "patterns-finding", "name": "Patterns", "description": "Patterns.", "questions": [ { "text": "What are necrolytic migratory erythema, erythema annulare centrifugum, palmar erythema, niacin flush, keratolytic winter erythema and mercurial erythema?", "kind": "definition" }, { "text": "Which entry fits the specific pattern?", "kind": "action" } ] } ] } ] }, { "id": "mechanism", "name": "Mechanism", "description": "Mechanism.", "rationale": "Science.", "layers": [ { "id": "vessels", "name": "Vessels", "description": "Capillary dilation.", "findings": [ { "id": "vessels-finding", "name": "Vessels", "description": "Vessels.", "questions": [ { "text": "How does capillary dilation cause redness, and why does it blanch?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "uv", "name": "UV", "description": "Sunburn erythema.", "findings": [ { "id": "uv-finding", "name": "UV", "description": "UV.", "questions": [ { "text": "How is UV erythema measured with the minimal erythema dose?", "kind": "measurement" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] } ] }, { "id": "conditions", "name": "Conditions", "description": "Associated conditions.", "rationale": "Science.", "layers": [ { "id": "systemic", "name": "Systemic", "description": "Systemic signs.", "findings": [ { "id": "systemic-finding", "name": "Systemic", "description": "Systemic.", "questions": [ { "text": "How can palmar erythema and necrolytic migratory erythema point to internal disease?", "kind": "provenance" }, { "text": "Which entry fits glucagonoma?", "kind": "action" } ] } ] }, { "id": "reactions", "name": "Reactions", "description": "Drug and niacin reactions.", "findings": [ { "id": "reactions-finding", "name": "Reactions", "description": "Reactions.", "questions": [ { "text": "Why does niacin cause flushing, and which drug reactions are dangerous?", "kind": "provenance" }, { "text": "Which entry fits Stevens-Johnson syndrome?", "kind": "action" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "Care.", "rationale": "Attribution.", "layers": [ { "id": "care", "name": "Care", "description": "When to seek care.", "findings": [ { "id": "care-finding", "name": "Care", "description": "Care.", "questions": [ { "text": "When do clinicians advise seeing a doctor about skin redness?", "kind": "provenance" }, { "text": "Is the information current?", "kind": "boundary" } ] } ] }, { "id": "genetics", "name": "Genetics", "description": "Inherited erythema.", "findings": [ { "id": "genetics-finding", "name": "Genetics", "description": "Genetics.", "questions": [ { "text": "What is known about keratolytic winter erythema genetics, as researchers report?", "kind": "provenance" }, { "text": "Is the presentation neutral and attributed?", "kind": "boundary" } ] } ] } ] } ] }, "openQuestions": [ "Should the registry parent flushing be revised?", "Should each named pattern be a separate entry?", "How should dermatology image atlases be linked?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "discipline or field of knowledge", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a erythema, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain erythema in general terms, relay causes, patterns and associated conditions from dermatology sources, route warning signs to urgent care, describe the named patterns, and distinguish erythema from flushing, purpura, rash as a broader term and cellulitis, without diagnosing individuals.", "characteristics": { "substance": "information", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "read and interpreted" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: necrolytic migratory erythema, erythema annulare centrifugum, palmar erythema, niacin flush, keratolytic winter erythema, mercurial erythema, Annular erythema of infancy, Figurate erythema, Generalized erythema, erythema of acral regions, Ulerythema, Erythrosis.", "14 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 33 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a erythema, and on what evidence are they told apart?" ], "whatItIsMadeOf": "content that has to be carried by something else", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "read it and act on what it says" ], "howItIsRecognised": [], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "necrolytic migratory erythema", "erythema annulare centrifugum", "palmar erythema", "niacin flush", "keratolytic winter erythema", "mercurial erythema", "Annular erythema of infancy", "Figurate erythema", "Generalized erythema", "erythema of acral regions", "Ulerythema", "Erythrosis" ] } ], "standing": "Described in 33 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 14 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one erythema from another, and a erythema from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a erythema, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a erythema, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a erythema is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a erythema, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a erythema, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a erythema is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a erythema sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a erythema, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a erythema, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a erythema is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a erythema from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a erythema, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a erythema, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a erythema is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a erythema passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a erythema between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a erythema, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a erythema, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a erythema is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a erythema, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a erythema is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a erythema, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a erythema, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a erythema is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "content-and-access", "name": "Content, encoding and access", "description": "What a erythema says, how it is encoded and who may read it.", "rationale": "An informational thing carries content that can be copied, versioned and withheld, none of which its physical carrier explains.", "layers": [ { "id": "content-and-encoding", "name": "Content and encoding", "description": "The content itself, its format and its language.", "findings": [ { "id": "content-and-format", "name": "Content, format and language", "description": "What a erythema contains and in what form it is held.", "questions": [ { "id": "content-and-format-q01", "text": "What identifies and describes the content of a erythema, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "content-and-format-q02", "text": "Who or what asserted this about the content of a erythema, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "content-and-format-q03", "text": "What may an agent decide or do once the content of a erythema is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "access-and-rights", "name": "Access, rights and retention", "description": "Who may read, copy or change it, and for how long it is kept.", "findings": [ { "id": "access-rules", "name": "Access rules and retention", "description": "The permissions attached to a erythema and the period it survives.", "questions": [ { "id": "access-rules-q01", "text": "What identifies and describes access to a erythema, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "access-rules-q02", "text": "Who or what asserted this about access to a erythema, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "access-rules-q03", "text": "What may an agent decide or do once access to a erythema is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "subject-and-method", "name": "Subject matter and method", "description": "What erythema studies and how it establishes anything.", "rationale": "A field is identified by its questions and its methods, and those are what distinguish it from the fields next to it.", "layers": [ { "id": "subject", "name": "Subject matter", "description": "The questions it takes as its own.", "findings": [ { "id": "subject-record", "name": "Questions and objects of study", "description": "What it is about, stated so a neighbouring field can be told apart.", "questions": [ { "id": "subject-record-q01", "text": "What questions and objects does erythema take as its own?", "kind": "definition" }, { "id": "subject-record-q02", "text": "Which questions does it share with a neighbouring field, and who claims them?", "kind": "boundary" } ] } ] }, { "id": "method", "name": "Method and evidence", "description": "How claims are established and what counts as evidence.", "findings": [ { "id": "method-record", "name": "Methods and standards of evidence", "description": "The methods used and what they are taken to establish.", "questions": [ { "id": "method-record-q01", "text": "By what methods does erythema establish claims, and what counts as sufficient evidence?", "kind": "provenance" }, { "id": "method-record-q02", "text": "What kind of claim can this field not settle, and where should an agent look instead?", "kind": "action" } ] } ] } ] }, { "id": "institutions-and-classification", "name": "Institutions and classification", "description": "Where erythema is practised and how catalogues place it.", "rationale": "The institutional footprint is the evidence that a field exists as a field rather than as a topic.", "layers": [ { "id": "institutions", "name": "Institutional markers", "description": "Societies, journals, degrees and departments.", "findings": [ { "id": "institution-record", "name": "Bodies and venues", "description": "Where the field organises itself.", "questions": [ { "id": "institution-record-q01", "text": "Which societies, journals or degrees mark erythema as an established field?", "kind": "provenance" }, { "id": "institution-record-q02", "text": "What would show that it is emerging or dissolving rather than established?", "kind": "boundary" } ] } ] }, { "id": "classification", "name": "Classification schemes", "description": "Where library and research classifications put it.", "findings": [ { "id": "classification-record", "name": "Codes and their disagreements", "description": "The classification codes that place it, and where they differ.", "questions": [ { "id": "classification-record-q01", "text": "Which classification schemes place erythema, under what codes?", "kind": "definition" }, { "id": "classification-record-q02", "text": "Where do those schemes disagree about its scope?", "kind": "boundary" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a erythema came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a erythema and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a erythema, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a erythema, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a erythema is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a erythema is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a erythema, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a erythema, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a erythema is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 6, "layers": 12, "findings": 14, "questions": 38 } } } }