{"topic_id":"companion_breed_health_sphynx_omia4570_cat","category":"companion-breed-health","context":"---\nlicense: permission_granted\ntopic_id: companion_breed_health_sphynx_omia4570_cat\ncategory: companion-breed-health\ntitle: \"Sphynx — Dyskinesia, paroxysmal (hereditary; OMIA-verified breed predisposition)\"\nlang: en\nsource: \"OMIA (Online Mendelian Inheritance in Animals, University of Sydney) breed-specific hereditary-disorder record, saved verbatim to source_file; C1 substring-verified. Pulled 2026-08-02 from local OMIA database dump.\"\nsource_file: pdf-raw/breed-health/sphynx_omia4570_4570.txt\ndate_parsed: 2026-08-02\ntokens_estimated: 233\nverification:\n  method: substring_match\n  claims: 4\n  passed: 4\n  date: 2026-08-02\nrecovered: false\npath: companion-breed-health/companion_breed_health_sphynx_omia4570_cat/01_companion_breed_health_sphynx_omia4570_cat.md\nsource_document: \"OMIA — Online Mendelian Inheritance in Animals (University of Sydney)\"\ncitation:\n  authority: \"OMIA — Online Mendelian Inheritance in Animals (University of Sydney)\"\n  title: \"Sphynx — Dyskinesia, paroxysmal (hereditary; OMIA-verified breed predisposition)\"\n  url: \"https://omia.org/OMIA001543/9685/\"\n  retrieved: \"2026-08-02\"\n  ref: \"OMIA breed-specific hereditary-disorder records (omia.org), derived from local OMIA database dump; dataset: https://doi.org/10.25910/2AMR-PV70\"\n  doc_type: \"academic animal-genetics database (breed-specific disorder entries)\"\n  needs_review: false\n\n\n# Sphynx — Dyskinesia, paroxysmal (hereditary; OMIA-verified breed predisposition)\n\nSource: first-hand OMIA (University of Sydney) breed-specific hereditary-disorder record, saved verbatim to `source_file`; every claim below is a C1 byte-substring of it.\n\n## Claims\n\n- `Breed: Sphynx (Cat)`\n- `Disorder: `\n- `Clin feat: Green et al. (2021) describe the phenotype of paroxysmal dyskinesia in ten Sphynx cats: All affected cats were 4 years of age at the onset of the episodes (range 0.5-4.0). The episodes had a duration of 5 mins in 9/10 cats (range 0.5-10), while episode frequency was variable between and within individual cats. The episodes were characterised by impaired ambulation due to muscle hypertonicity, most commonly affecting the hips and pelvic limbs (9/10) and shoulders and thoracic limbs (8/10). The head and neck (6/10), tail (5/10), and back and abdomen (3/10) were also involved in some cats. Sudden movement, excitement and stress were identified as possible triggers for the episodes in three cats. ... None of the owners believed that the abnormal episodes had affected the quality of life of their cat.`\n- `Defect: yes`\n## Evidence (references)\nDerived from OMIA database dump (omia.xml, local); structured field, not verbatim prose.\n- 2022. Phenotypic characterisation of paroxysmal dyskinesia in Sphynx cats.. J Feline Med Surg — PubMed:PMID34313487 | DOI:10.1177/1098612X211032123 — OMIA Phene_Article / Article\n- 2022. Dystonia in veterinary neurology.. J Vet Intern Med — PubMed:PMID36086931 | DOI:10.1111/jvim.16532 — OMIA Phene_Article / Article\n- 2024. Understanding paroxysmal dyskinesia in cats.. Vet Rec — PubMed:PMID39545572 | DOI:10.1002/vetr.4943 — OMIA Phene_Article / Article\n- 2026. Phenotypic characteristics of paroxysmal dyskinesia in 25 cats.. J Small Anim Pract — PubMed:PMID41881802 | DOI:10.1111/jsap.70125 — OMIA Phene_Article / Article\n## Evidence (references)\nDerived from OMIA database dump (omia.xml, local); structured field, not verbatim prose.\n- 2022. Phenotypic characterisation of paroxysmal dyskinesia in Sphynx cats. J Feline Med Surg — PubMed:PMID34313487 | DOI:10.1177/1098612X211032123 — OMIA Phene_Article / Article\n- 2022. Dystonia in veterinary neurology. J Vet Intern Med — PubMed:PMID36086931 | DOI:10.1111/jvim.16532 — OMIA Phene_Article / Article\n- 2024. Understanding paroxysmal dyskinesia in cats. Vet Rec — PubMed:PMID39545572 | DOI:10.1002/vetr.4943 — OMIA Phene_Article / Article\n- 2026. Phenotypic characteristics of paroxysmal dyskinesia in 25 cats. J Small Anim Pract — PubMed:PMID41881802 | DOI:10.1111/jsap.70125 — OMIA Phene_Article / Article\n## Evidence (references)\nDerived from OMIA database dump (omia.xml, local); structured field, not verbatim prose. First-hand values below are verbatim substrings of the topic's pdf-raw/omia/<phene_id>.txt source file.\n- 2022. Phenotypic characterisation of paroxysmal dyskinesia in Sphynx cats. J Feline Med Surg — PubMed:PMID34313487 | DOI:10.1177/1098612X211032123 — OMIA Phene_Article / Article\n- 2022. Dystonia in veterinary neurology. J Vet Intern Med — PubMed:PMID36086931 | DOI:10.1111/jvim.16532 — OMIA Phene_Article / Article\n- 2024. Understanding paroxysmal dyskinesia in cats. Vet Rec — PubMed:PMID39545572 | DOI:10.1002/vetr.4943 — OMIA Phene_Article / Article\n- 2026. Phenotypic characteristics of paroxysmal dyskinesia in 25 cats. J Small Anim Pract — PubMed:PMID41881802 | DOI:10.1111/jsap.70125 — OMIA Phene_Article / Article\nverification_derived:\n  method: derived_from_dataset\n  source: \"OMIA database dump (omia.xml, local); fields Gene/Variant/Article/OMIM\"\n  note: \"Structured fields (gene, variant rsID/protein change, PubMed/DOI references, OMIM cross-link) extracted from OMIA dump and presented with first-hand values; not verbatim prose.\"\n## Evidence (references)\nDerived from OMIA database dump (omia.xml, local); structured field, not verbatim prose. First-hand values below are verbatim substrings of the topic's pdf-raw/omia/<phene_id>.txt source file.\n- 2022. Phenotypic characterisation of paroxysmal dyskinesia in Sphynx cats. J Feline Med Surg — PubMed:PMID34313487 | DOI:10.1177/1098612X211032123 — OMIA Phene_Article / Article\n- 2022. Dystonia in veterinary neurology. J Vet Intern Med — PubMed:PMID36086931 | DOI:10.1111/jvim.16532 — OMIA Phene_Article / Article\n- 2024. Understanding paroxysmal dyskinesia in cats. Vet Rec — PubMed:PMID39545572 | DOI:10.1002/vetr.4943 — OMIA Phene_Article / Article\n- 2026. Phenotypic characteristics of paroxysmal dyskinesia in 25 cats. J Small Anim Pract — PubMed:PMID41881802 | DOI:10.1111/jsap.70125 — OMIA Phene_Article / Article\nverification_derived:\n  method: derived_from_dataset\n  source: \"OMIA database dump (omia.xml, local); fields Gene/Variant/Article/OMIM\"\n  note: \"Structured fields (gene, variant rsID/protein change, PubMed/DOI references, OMIM cross-link) extracted from OMIA dump and presented with first-hand values; not verbatim prose.\"\n## Evidence (references)\nDerived from OMIA database dump (omia.xml, local); structured field, not verbatim prose. First-hand values below are verbatim substrings of the topic's pdf-raw/omia/<phene_id>.txt source file.\n- 2022. Phenotypic characterisation of paroxysmal dyskinesia in Sphynx cats. J Feline Med Surg — PubMed:PMID34313487 | DOI:10.1177/1098612X211032123 — OMIA Phene_Article / Article\n- 2022. Dystonia in veterinary neurology. J Vet Intern Med — PubMed:PMID36086931 | DOI:10.1111/jvim.16532 — OMIA Phene_Article / Article\n- 2024. Understanding paroxysmal dyskinesia in cats. Vet Rec — PubMed:PMID39545572 | DOI:10.1002/vetr.4943 — OMIA Phene_Article / Article\n- 2026. Phenotypic characteristics of paroxysmal dyskinesia in 25 cats. J Small Anim Pract — PubMed:PMID41881802 | DOI:10.1111/jsap.70125 — OMIA Phene_Article / Article\nverification_derived:\n  method: derived_from_dataset\n  source: \"OMIA database dump (omia.xml, local); fields Gene/Variant/Article/OMIM\"\n  note: \"Structured fields (gene, variant rsID/protein change, PubMed/DOI references, OMIM cross-link) extracted from OMIA dump and presented with first-hand values; not verbatim prose.\"\n","sources":["companion-breed-health — Sphynx — Dyskinesia, paroxysmal (hereditary; OMIA-verified breed predisposition)"],"source":{"authority":"companion-breed-health","title":"Sphynx — Dyskinesia, paroxysmal (hereditary; OMIA-verified breed predisposition)","url":"https://pubmed.ncbi.nlm.nih.gov/34313487/","retrieved":"","ref":"PMID 34313487","doc_type":"official source","source_document":"","verification_file":""},"source_document":"","source_file":"","trust":{"authority_tier":"ungraded","fidelity":"verbatim","license":null,"display_grade":"pending"},"tokens_estimated":1206,"generated_at":null,"tip":"Use /api/v1/topics to discover more topics. /api/v1/nutrient for precise single-point queries. /api/v1/cross_compare for 2-3 standard comparisons."}