Tourette syndrome
Enable an agent to recognise Tourette syndrome, represent its changing manifestations and impact, and support evidence-based assessment and care decisions.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to recognise Tourette syndrome, represent its changing manifestations and impact, and support evidence-based assessment and care decisions.
Tourette syndrome is a neurodevelopmental tic disorder characterized by multiple motor tics and at least one vocal tic occurring at some time during a course lasting more than one year since first tic onset, with onset before age 18 and symptoms not attributable to a substance or another medical condition.
It can be Assemble a dated motor and vocal tic history and identify evidence missing for clinician assessment.; Compare documented evidence with a named diagnostic framework while retaining uncertainty and assessor attribution.; Track tic changes and functional impact using comparable observation periods and measures.; Flag unresolved alternative explanations or unexplained changes for clinical review.; Summarise person-selected goals, accommodations and clinician-discussed management options.; Audit terminology mappings and population claims against their source releases and study definitions..
Distinguishing features
Under the American Psychiatric Association's DSM-5-TR framework, assess a history of multiple motor tics and at least one vocal tic; motor-only or vocal-only histories require a different classification assessment. [CDC diagnostic overview](https://www.cdc.gov/tourette-syndrome/diagnosis/index.html)
Establish onset before age 18 and the required duration from first tic onset under the selected criteria version; a shorter history must not automatically receive the Tourette label. [CDC diagnostic overview](https://www.cdc.gov/tourette-syndrome/diagnosis/index.html)
Assess whether substances, medication or another medical condition explain the manifestations before accepting the diagnostic boundary. [CDC diagnostic overview](https://www.cdc.gov/tourette-syndrome/diagnosis/index.html)
A presentation described as tic-like, including sudden-onset functional tic-like behaviours, requires assessment rather than automatic classification as Tourette syndrome. [CDC diagnostic overview](https://www.cdc.gov/tourette-syndrome/diagnosis/index.html)
A single observed movement, sound or tic-free encounter cannot establish the required developmental history; recognition must connect present observations with longitudinal evidence.
Scope
+ Motor and vocal tic repertoire, reported experiences and observation context
+ Onset, duration, fluctuation and longitudinal course
+ Versioned diagnostic criteria, differential assessment and classification mappings
+ Tic-related impairment and relationships to co-occurring conditions
+ Evidence supporting management choices, individual goals and response assessment
+ Aetiological evidence and population estimates with their limitations
- The general meaning and classification of syndrome
- The person's complete identity, health record or social circumstances
- Independent models of ADHD, obsessive-compulsive disorder and other co-occurring conditions
- Full models of other tic disorders or functional neurological disorder
- Encounter administration, billing and care-service operations
- Drug prescribing protocols and the internal specification of therapeutic procedures
Characteristics
- Diagnostic framework
- Issuing body, framework, edition or release, jurisdiction and applicable criteria Makes the basis of a diagnostic assertion explicit and prevents criteria from different systems being silently combined.
- Tic repertoire
- Motor or vocal; concrete movement or sound; body region; first and last reported occurrence Supports recognition across changing manifestations rather than treating each new tic as a new condition.
- Age at first tic
- Years and months, or an estimated interval with confidence and informant Separates developmental onset from the age at which diagnosis or care began.
- Time since first tic
- Months or years at a dated assessment, with uncertainty and reported intervals of absence Supports duration criteria without confusing observation time with symptom history.
- Urge and suppression experience
- Reported urge, temporary suppression, associated effort or discomfort; absent, unknown or not assessed Captures the person's experience without interpreting suppressibility as proof that symptoms are deliberate.
- Tic severity
- Named instrument, version, component scores, permitted ranges, assessor and recall period Makes severity comparisons interpretable and distinguishes scale components from overall impact.
- Functional impact
- Pain, injury, communication, learning, work, sleep and participation effects; patient-rated priority and assessment date Connects management decisions to consequences that matter to the person.
- Diagnostic assertion
- Link to assessor, date, supporting evidence, framework and status: suspected, confirmed, disputed or revised Keeps a clinical judgement distinct from the underlying condition and from a billing code.
- Co-occurring condition
- Linked condition or assessment, certainty, temporal relationship and attributed contribution to impairment Prevents every difficulty from being attributed to tics.
- Population estimate
- Proportion or cases per stated denominator, uncertainty, age range, geography, study years and ascertainment method Distinguishes diagnosed prevalence from estimates based on screening or clinical assessment.
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 18 findings · 28 questions.
Tourette identity and diagnostic boundaries Establishes which condition the registry entry denotes and how diagnostic evidence is evaluated.
Tourette-specific criteria must supplement the wider syndrome concept without turning a label or code into diagnostic proof.
Condition and assertion
Separates the registered concept from individual diagnostic judgements and terminology mappings.
Versioned diagnostic identity
Record the framework behind each diagnostic assertion and verify ICD-10, ICD-11 and SNOMED CT mappings against their own releases.
- Which issuing body, criteria edition and assessment date support this Tourette diagnostic assertion? provenance
- Which verified terminology concept denotes Tourette syndrome in the relevant release, and is the mapping exact or qualified? boundary
Criteria and alternatives
Connects tic history to the selected diagnostic rules and unresolved alternatives.
Criterion-level evidence
Keep evidence for tic types, onset, duration and exclusions individually assessable rather than collapsing missing information into a yes-or-no label.
- What evidence supports or leaves uncertain each required motor, vocal, onset and duration criterion? definition
- What assessment distinguishes this presentation from another tic disorder, functional tic-like behaviours or another explanation? boundary
Tic repertoire and lived experience Describes the actual movements, sounds and associated experiences being assessed.
A generic symptom count cannot represent changing tic forms, observation limits or the effort involved in managing them.
Motor and vocal description
Makes the reported or observed tic repertoire recognisable.
Identifiable tic manifestations
Describe each movement or sound concretely, retaining the distinction between a witnessed event and an informant's report.
- What movement or sound occurs, which body region is involved, and how is it classified by the assessor? definition
- Who observed or reported it, in which setting and over what observation period? provenance
Urges, suppression and context
Captures experiences and circumstances that may not be visible during an assessment.
Subjective and contextual evidence
Ask about urges, suppression and contextual variation without requiring these experiences to be reported or assuming their absence when unassessed.
- Does the person describe an urge, temporary suppression or associated discomfort, and how was this elicited? measurement
- How do reported manifestations differ between settings, and could observation conditions explain the discrepancy? boundary
Developmental course and evidence Places manifestations in time and separates individual history from causal and population claims.
A current snapshot cannot establish developmental onset, long-term course or the applicability of research estimates.
Onset and longitudinal course
Reconstructs onset and change without imposing unsupported universal stages.
Dated tic trajectory
Represent first tic onset, subsequent motor and vocal manifestations, fluctuations and assessment dates with their uncertainty.
- When did the first tic and the first reported motor and vocal manifestations occur, and how reliable are those dates? provenance
- Which changes reflect sustained improvement or worsening, and which may reflect short observation windows or changed reporting? measurement
Aetiology and affected populations
Qualifies research claims about causes, susceptibility and distribution.
Bounded research inferences
Keep family history, proposed mechanisms and epidemiological estimates separate from proof of an individual's cause or diagnosis.
- Which source supports each aetiological claim, and does it establish causation, association or a proposed mechanism? provenance
- For each prevalence estimate, what population, years, case definition, ascertainment method and uncertainty apply? measurement
Severity, impact and co-occurrence Assesses tic burden and its relationship to everyday functioning and other conditions.
Visible tic frequency alone cannot determine the person's priorities or explain all impairment.
Tic burden and function
Keeps measured manifestations and experienced consequences separately visible.
Interpretable burden assessment
Record instrument-specific severity alongside pain, injury, interference and the person's own account of impact.
- Which severity instrument, version, component and recall interval produced the recorded score? measurement
- Which tic-related consequences matter most to the person in daily life? measurement
Co-occurring and environmental contributions
Separates tic effects from other clinical difficulties and responses in the surrounding environment.
Attributed functional difficulties
Link assessments of attention, compulsions, anxiety and other concerns to their own condition records; document stigma or exclusion as contextual contributors.
- Which difficulties are attributed to tics, another assessed condition, environmental responses or an unresolved combination? boundary
- Which assessment or accommodation could clarify or reduce the most important difficulty? action
Management goals and response Connects supported management choices to individual priorities and interpretable follow-up.
Care decisions need an explicit target, applicable evidence and a way to distinguish benefit from ordinary fluctuation.
Goals and option selection
Records why a particular support or intervention is being considered.
Goal-linked management
Represent clinician-discussed options such as monitoring, behavioural intervention, medication and accommodations with their rationale and the person's preferences.
- What outcome does the person want, and which tic-related difficulty is the proposed option intended to address? action
- Which guideline and individual assessment support the option, including its suitability, access requirements and burdens? provenance
Follow-up and reassessment
Assesses outcomes while preserving the distinction between the condition and an episode of care.
Response with attribution limits
Compare agreed outcomes over time, recording concurrent changes and adverse effects before attributing improvement or worsening to an intervention.
- What changed relative to the agreed baseline in tic burden, functioning, personal goals and unwanted effects? measurement
- Does the evidence support continuing, reviewing or changing the plan with the responsible clinician? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- This is recall, not source-verified research; the definition follows DSM-5-TR criteria, and other classification systems should be checked separately.
- Tics commonly wax and wane and often lessen during adolescence, but persistence and impairment vary; there is no single established cause or confirmatory laboratory test.
- No prevalence estimate or formal subtype list is supplied; population, age, ascertainment method and study year would need verification.
- Which of these check these first hold for the sense of Tourette syndrome this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- ICD-10 - F95.2 - WHO category for combined vocal and multiple motor tic disorder, including Tourette syndrome; national modifications should be checked separately.
- SNOMED CT - Numeric concept identifier - The exact concept identifier and applicable edition require verification.
- Which of these identifiers and schemes hold for the sense of Tourette syndrome this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- American Psychiatric Association DSM-5-TR: diagnostic criteria for Tourette's disorder.
- World Health Organization ICD-10: classification under tic disorders.
- World Health Organization ICD-11: diagnostic classification; exact code and release should be verified.
- Which of these standards and regulation hold for the sense of Tourette syndrome this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Clinical assessment of the types, onset, duration and functional effects of tics.
- Assessment of co-occurring ADHD, obsessive-compulsive symptoms, anxiety and learning difficulties.
- Selection and monitoring of behavioral interventions, including comprehensive behavioral intervention for tics.
- Planning school and workplace accommodations according to individual needs.
- Defining participant groups and outcomes in clinical research.
- Which of these real-world use hold for the sense of Tourette syndrome this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Yale Global Tic Severity Scale total tic score - 0-50 possible score; this is the instrument range, not a typical patient range - points
- Yale Global Tic Severity Scale impairment score - 0-50 possible score; assessed separately from tic severity - points
- Which of these typical measurements hold for the sense of Tourette syndrome this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Equating Tourette syndrome with involuntary swearing; coprolalia is not required for diagnosis.
- Mistaking tics for deliberate misconduct, or treating temporary tic suppression as evidence that symptoms are voluntary.
- Confusing tics with compulsions, stereotypies, other movement disorders or functional tic-like behaviors.
- Missing co-occurring conditions that may cause more impairment than the tics themselves.
- Pain, injury, bullying and social exclusion can occur, but severity and functional impact vary substantially.
- Which of these failure modes and hazards hold for the sense of Tourette syndrome this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Diagnostic documentation and administrative coding vary with use of DSM, WHO ICD and national ICD modifications.
- Access to specialist assessment, behavioral treatment and educational accommodations varies across health and education systems.
- Which of these regional variation hold for the sense of Tourette syndrome this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- syndrome - A syndrome is a general grouping of associated clinical features; Tourette syndrome specifies a particular pattern and history of motor and vocal tics.
- persistent motor or vocal tic disorder - Under DSM-5-TR, motor or vocal tics occur, but not both types over the illness course; Tourette syndrome requires both types at some time, though not necessarily simultaneously.
- provisional tic disorder - Under DSM-5-TR, less than one year has elapsed since first tic onset, and criteria for Tourette syndrome or persistent motor or vocal tic disorder have never been met.
- obsessive-compulsive disorder - Compulsions are typically performed in response to obsessions or rules; tics are recurrent movements or vocalizations often associated with premonitory urges, although overlap can complicate assessment.
- functional tic-like behaviors - Distinction requires assessment of onset, evolution and clinical features; appearance alone is insufficient, and functional symptoms can coexist with Tourette syndrome.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of Tourette syndrome this model covers, and on what evidence? provenance
What the second pass must settle
- Does an existing Vercy world model already cover Tourette syndrome, requiring this registry entry to link to it rather than create a second publication?
- What are the verified ICD-10 jurisdiction-specific, ICD-11 release-specific and SNOMED CT edition-specific mappings, and where do their diagnostic boundaries differ?
- Which validated tic, urge, impairment and quality-of-life measures are suitable across ages, languages and assessment settings, including thresholds for meaningful change?
- What does current evidence establish about aetiology, adult persistence and prevalence across populations when diagnostic ascertainment and study years are accounted for?
- Which current guidelines best support management selection and reassessment, including complex differential presentations and severe or treatment-resistant impairment?