{ "model": { "rank": 11905, "code": "thing-q949302", "model_id": "vr.tr.skin-disease", "name": "skin disease", "purpose": "Let an agent handle skin diseases as classified conditions, give only general information, avoid diagnosis from images or descriptions, and direct people to clinicians.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.STA", "industry": "", "version": "", "url": "/models/thing/q949302/", "tier": 2, "score": 41, "payload": { "layer": "wikidata", "aliases": [ "acarodermatitis", "gamasoidosis", "skin neoplasm", "Plexiform fibrohistiocytic tumor", "skin benign neoplasm", "cutaneous fibrohistiocytic neoplasm", "skin tumor of neural origin", "skin fibrous tissue neoplasm", "skin tumor of smooth muscle origin", "inherited skin tumor", "proliferating epidermoid cyst", "Reactional keratosis", "trichilemmoma", "Trichoadenoma", "Trichodiscoma", "epidermal appendage tumor", "sweat gland neoplasm", "sebaceous gland neoplasm", "eyelid neoplasm", "skin glomangioma", "dermis tumor", "benign dermal neurilemmoma", "benign neoplasm of sweat gland", "benign neoplasm of sebaceous gland", "benign epithelial skin neoplasm", "encephalocraniocutaneous lipomatosis", "FMDF", "eyelid seborrheic keratosis", "cherubism", "Ramon syndrome", "Al Gazali Khidr Prem Chandran syndrome", "Hori's nevus", "wheal", "kerosis", "pigmentation disorder", "eschar", "skin manifestation", "Dermatopolymyositis", "flavism", "hyperpigmentation of eyelid" ], "aliasCount": 284, "merged": 284, "knownIn": 41, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.skin-disease", "source": { "dataset": "wikidata", "item": "Q949302", "url": "https://www.wikidata.org/wiki/Q949302", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T05:15:23Z", "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": 1, "engine": "claude" }, "metaModel": { "id": "THING-Q949302", "registryId": "vr.tr.skin-disease", "name": "skin disease", "version": "0.2.0-wave.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.STA" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q949302/", "model": { "registry_id": "vr.tr.skin-disease", "name": "skin disease", "purpose": "Let an agent handle skin diseases as classified conditions, give only general information, avoid diagnosis from images or descriptions, and direct people to clinicians.", "definition": "A disease or condition affecting the skin, hair or nails, including inflammatory, infectious, genetic and neoplastic conditions such as dermatitis, infestations and skin tumours.", "what_it_is_for": "Naming skin conditions so they can be diagnosed, treated and prevented.", "affordances": [ "diagnose it, by a clinician, often a dermatologist", "treat and manage it", "prevent it, for example by sun protection", "screen for skin cancer" ], "distinguishing_features": [ "Affects skin, hair or nails", "Includes infections, inflammation, infestations and tumours", "Visual diagnosis by non-clinicians or apps is unreliable", "Can have large psychological impact" ], "appearance": "Rashes, lesions, spots, scaling, blisters or growths; appearance varies with skin tone, and similar-looking conditions can be very different.", "visual_identification": [ "Only clinical examination, sometimes with biopsy, establishes a diagnosis", "Appearance differs across skin tones", "Changing moles need prompt assessment" ], "physical_properties": [], "families_and_kinds": [ "inflammatory: eczema, psoriasis, dermatitis", "infectious and infestations: fungal, bacterial, acariasis", "neoplastic: benign and malignant skin tumours", "genetic and autoimmune conditions" ], "related_models": [ { "relation": "is a kind of", "target": "disease", "why": "condition" }, { "relation": "is treated by", "target": "medicine", "why": "dermatology" }, { "relation": "is confused with", "target": "cosmetic concern", "why": "not all skin changes are disease" }, { "relation": "is caused in some cases by", "target": "insect and mite", "why": "infestations" } ], "identifiers": [ { "scheme": "ICD-11 code", "value_or_pattern": "chapter 14 codes", "note": "skin diseases" } ], "standards_and_regulation": [ "WHO ICD-11", "Medical device rules for diagnostic apps", "Health data protection law" ], "failure_modes_and_hazards": [ "Missing melanoma", "App or image-based self-diagnosis", "Training data biased toward lighter skin" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "classification", "name": "Classification", "description": "Which condition.", "rationale": "Codes and categories organise skin diseases.", "layers": [ { "id": "code", "name": "Code", "description": "ICD-11.", "findings": [ { "id": "code-finding", "name": "Codes", "description": "Classification codes.", "questions": [ { "text": "Which ICD-11 code classifies this condition?", "kind": "provenance" }, { "text": "Which category does it belong to?", "kind": "definition" } ] } ] }, { "id": "mimics", "name": "Mimics", "description": "Similar-looking conditions.", "findings": [ { "id": "mimics-finding", "name": "Differential", "description": "Conditions that look similar.", "questions": [ { "text": "Which conditions look similar but differ?", "kind": "boundary" }, { "text": "Why does that matter for care?", "kind": "boundary" } ] } ] } ] }, { "id": "signs-and-cause", "name": "Signs and cause", "description": "What it looks like and why.", "rationale": "Signs vary with skin tone and stage.", "layers": [ { "id": "signs", "name": "Signs", "description": "Typical features.", "findings": [ { "id": "signs-finding", "name": "Signs", "description": "Typical features.", "questions": [ { "text": "What are its typical features on different skin tones?", "kind": "definition" }, { "text": "Which signs are warning signs?", "kind": "boundary" } ] } ] }, { "id": "cause", "name": "Cause", "description": "Triggers and causes.", "findings": [ { "id": "cause-finding", "name": "Cause", "description": "Causes and triggers.", "questions": [ { "text": "What causes or triggers it?", "kind": "definition" }, { "text": "Is it contagious?", "kind": "boundary" } ] } ] } ] }, { "id": "care", "name": "Care", "description": "Getting help.", "rationale": "Diagnosis and treatment belong to clinicians.", "layers": [ { "id": "referral", "name": "Referral", "description": "When to see a clinician.", "findings": [ { "id": "referral-finding", "name": "Referral", "description": "When to seek care.", "questions": [ { "text": "Which changes need urgent assessment, such as a changing mole?", "kind": "action" }, { "text": "Who should the person see?", "kind": "action" } ] } ] }, { "id": "treatment", "name": "Treatment", "description": "Guideline care.", "findings": [ { "id": "treatment-finding", "name": "Treatment", "description": "Recommended treatments.", "questions": [ { "text": "What do guidelines recommend?", "kind": "provenance" }, { "text": "What should an agent not recommend?", "kind": "boundary" } ] } ] } ] }, { "id": "impact-and-prevention", "name": "Impact and prevention", "description": "Living with and preventing it.", "rationale": "Skin conditions affect wellbeing; some are preventable.", "layers": [ { "id": "impact", "name": "Impact", "description": "Quality of life.", "findings": [ { "id": "impact-finding", "name": "Impact", "description": "Effects on life.", "questions": [ { "text": "How does it affect daily life and wellbeing?", "kind": "measurement" }, { "text": "What support exists?", "kind": "action" } ] } ] }, { "id": "prevention", "name": "Prevention", "description": "Sun protection and hygiene.", "findings": [ { "id": "prevention-finding", "name": "Prevention", "description": "Preventive measures.", "questions": [ { "text": "Which measures reduce the risk?", "kind": "action" }, { "text": "Is screening recommended?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Should each skin disease link to ICD-11?", "How should agents respond to photos of skin lesions?", "How should skin-tone bias be addressed in resources?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "disease or condition", "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 skin disease, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent handle skin diseases as classified conditions, give only general information, avoid diagnosis from images or descriptions, and direct people to clinicians.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: acarodermatitis, gamasoidosis, skin neoplasm, Plexiform fibrohistiocytic tumor, skin benign neoplasm, cutaneous fibrohistiocytic neoplasm, skin tumor of neural origin, skin fibrous tissue neoplasm, skin tumor of smooth muscle origin, inherited skin tumor, proliferating epidermoid cyst, Reactional keratosis.", "284 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 41 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 skin disease, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "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": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Recognised by criteria applied to signs and findings, not by appearance. Two conditions can look identical and be distinguished only by test." ], "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": [ "acarodermatitis", "gamasoidosis", "skin neoplasm", "Plexiform fibrohistiocytic tumor", "skin benign neoplasm", "cutaneous fibrohistiocytic neoplasm", "skin tumor of neural origin", "skin fibrous tissue neoplasm", "skin tumor of smooth muscle origin", "inherited skin tumor", "proliferating epidermoid cyst", "Reactional keratosis" ] } ], "standing": "Described in 41 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 284 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 skin disease from another, and a skin disease 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 skin disease, 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 skin disease, 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 skin disease 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 skin disease, 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 skin disease, 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 skin disease 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 skin disease 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 skin disease, 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 skin disease, 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 skin disease 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 skin disease from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a skin disease, 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 skin disease, 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 skin disease 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 skin disease 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 skin disease between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a skin disease, 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 skin disease, 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 skin disease 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 skin disease, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a skin disease 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 skin disease, 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 skin disease, 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 skin disease is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "diagnosis-and-criteria", "name": "Diagnosis, criteria and coding", "description": "What makes a case of skin disease a case, and under which revision.", "rationale": "Criteria change between revisions, so a diagnosis without its coding revision cannot be compared with a later one.", "layers": [ { "id": "criteria", "name": "Diagnostic criteria", "description": "The criteria in force and who issues them.", "findings": [ { "id": "criteria-record", "name": "Criteria, issuer and revision", "description": "What must be true for a diagnosis, according to whom.", "questions": [ { "id": "criteria-record-q01", "text": "What criteria define skin disease, issued by which body, in which revision?", "kind": "definition" }, { "id": "criteria-record-q02", "text": "What changed between revisions that would reclassify existing cases?", "kind": "boundary" } ] } ] }, { "id": "coding", "name": "Coding and terminology", "description": "The codes used to record it and their mapping.", "findings": [ { "id": "coding-record", "name": "Codes and mappings", "description": "Which classification codes apply and how they map.", "questions": [ { "id": "coding-record-q01", "text": "Which classification and terminology codes cover skin disease, and how do they map to each other?", "kind": "definition" }, { "id": "coding-record-q02", "text": "What is lost when a case is mapped from one scheme to another?", "kind": "boundary" } ] } ] } ] }, { "id": "course-and-population", "name": "Course, population and care", "description": "How skin disease develops, whom it affects, and what is done about it.", "rationale": "The condition, the diagnosis and the episode of care are three different things, and an agent must not merge them.", "layers": [ { "id": "course", "name": "Course and stages", "description": "Onset, progression, remission and outcome.", "findings": [ { "id": "course-record", "name": "Stages and transitions", "description": "The stages recorded and what moves a case between them.", "questions": [ { "id": "course-record-q01", "text": "What course does skin disease typically take, and what marks each stage?", "kind": "definition" }, { "id": "course-record-q02", "text": "What separates the condition itself from an episode of care for it?", "kind": "boundary" } ] } ] }, { "id": "population", "name": "Affected populations", "description": "Who is affected, how often, and on what evidence.", "findings": [ { "id": "epidemiology", "name": "Prevalence and its basis", "description": "Rates with their population, period and source.", "questions": [ { "id": "epidemiology-q01", "text": "What prevalence or incidence is reported for skin disease, in which population and period?", "kind": "measurement" }, { "id": "epidemiology-q02", "text": "What may an agent not conclude about an individual from a population rate?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a skin disease 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 skin disease and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a skin disease, 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 skin disease, 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 skin disease 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 skin disease is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a skin disease, 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 skin disease, 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 skin disease is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }