_id

683a162ac782e11e38d1b234

id

10039

title

CASPAR Criteria for Psoriatic Arthritis

full_title

CASPAR Criteria for Psoriatic Arthritis

short_title

CASPAR Criteria for PsA

med_description

Provides classification criteria for psoriatic arthritis.

short_description

Psoriatic arthritis classification.

slug

caspar-criteria-psoriatic-arthritis

description

The CASPAR Criteria for Psoriatic Arthritis provides criteria for psoriatic arthritis diagnosis.

keywords

CASPAR, psoriatic arthritis, arthritis, psa, caspar criteria

complaint

[ "Chronic Pain", "Extremity Pain", "Joint Pain", "Pain" ]

formula

A patient must have inflammatory articular disease (joint, spine, or entheseal) with ≥3 points from the following 5 categories:

evidence

measurements

[]

information

refrences

{ "Clinical Practice Guidelines": [], "Manufacturer Website": [], "Original/Primary Reference": [ { "href": "https://www.ncbi.nlm.nih.gov/pubmed/16871531 ", "text": "Taylor W, Gladman D, Helliwell P, et al. Classification criteria for psoriatic arthritis: development of new criteria from a large international study. Arthritis Rheum. 2006;54(8):2665-73." } ], "Other References": [], "Outcomes": [], "Validation": [ { "href": "https://ard.bmj.com/content/64/suppl_2/ii3#block-system-main", "text": "Helliwell PS, Taylor WJ. Classification and diagnostic criteria for psoriatic arthritis. Ann Rheum Dis. 2005;64 Suppl 2:ii3-8." }, { "href": "https://academic.oup.com/rheumatology/article/49/1/112/1790342 ", "text": "Leung YY, Tam LS, Ho KW, et al. Evaluation of the CASPAR criteria for psoriatic arthritis in the Chinese population. Rheumatology (Oxford). 2010;49(1):112-5." } ], "Validations": [] }

pearls

• Derived from the international Classification of Psoriatic Arthritis (CASPAR) study, which included 588 patients with PsA from 30 clinics across 13 countries, as well as a control group with other forms of inflammatory arthritis.
• Should not be used in cases that do not demonstrate evidence for inflammatory musculoskeletal disease (e.g., peripheral arthritis, enthesitis, spondylitis).
• Enables classification of PsA even in the absence of psoriasis, provided other associated features are present.

usecase

Use in patients with inflammatory arthritis, enthesitis, or spondylitis where psoriatic arthritis (PsA) is a diagnostic consideration.

reasons

Provides a standardized, validated tool to assist in identifying PsA, with high sensitivity (91% in the original study) and specificity (98%). Helps ensure consistent diagnosis in research settings. May aid in the evaluation of patients with suspected PsA in clinical settings.

next_advice

• These criteria are not a standalone diagnostic tool but can assist clinicians in evaluating and identifying potential PsA cases; their application should always be guided by clinical context and judgment.
• A potential PsA diagnosis should prompt: 
  
  • Referral to a rheumatologist, if not already involved.
  • Initiation or adjustment of treatment to target inflammation and prevent disease progression (e.g., NSAIDs, DMARDs, biologics).
  • Comprehensive assessment for comorbidities like uveitis, inflammatory bowel disease, and cardiovascular risk factors, which are common in PsA.
  • Regular monitoring of disease activity and adjustment to management plans, as necessary.
• For patients who do not meet the criteria, consider alternative diagnoses such as rheumatoid arthritis, reactive arthritis, other spondyloarthropathies, osteoarthritis, or crystal arthropathies, and pursue additional workup based on the clinical presentation.
• Please refer to relevant PsA clinical guidelines, such as those from the American College of Rheumatology, for more detailed recommendations.

next_actions

next_management

diseases

[ "Autoimmune Disorders" ]

input_schema

[ { "inct": null, "option_fhir_rules": null, "subheading": "Required criterion", "subheading_instructions": "", "type": "subheading" }, { "conditionality": "", "default": 0, "label_en": "<p>Inflammatory articular disease</p>", "md_calc_info_concept": null, "name": "articulardisease", "option_fhir_rules": null, "optional": false, "options": [ { "label": "No", "value": 0 }, { "label": "Yes", "value": 1 } ], "show_points": false, "tips_en": "Joint, spine, or entheseal", "type": "toggle" }, { "inct": null, "option_fhir_rules": null, "subheading": "Additional criteria (must fulfill ≥3 points from the following 5 categories)", "subheading_instructions": "", "type": "subheading" }, { "conditionality": "articulardisease == 1", "default": 0, "label_en": "<p>History of psoriasis</p>", "mdcalc_info_concept": null, "name": "one", "option_fhir_rules": null, "optional": false, "options": [ { "label": "None", "value": 0 }, { "label": "Personal history of psoriasis or family history of psoriasis in a first- or second-degree relative", "value": 1 }, { "label": "Current psoriasis: psoriatic skin or scalp disease present today, diagnosed by a rheumatologist or dermatologist", "value": 2 } ], "show_points": true, "tips_en": "Select the option that assigns the most points (e.g. if both current psoriasis and family history, select current psoriasis)", "type": "radio" }, { "conditionality": "articulardisease == 1", "default": 0, "label_en": "Typical psoriatic nail dystrophy", "md_calc_info_concept": null, "name": "two", "option_fhir_rules": null, "optional": false, "options": [ { "label": "No", "value": 0 }, { "label": "Yes", "value": 1 } ], "show_points": true, "tips_en": "Onycholysis, pitting, and hyperkeratosis on exam", "type": "toggle" }, { "conditionality": "articulardisease == 1", "default": 0, "label_en": "Rheumatoid factor negative", "md_calc_info_concept": null, "name": "three", "option_fhir_rules": null, "optional": false, "options": [ { "label": "No", "value": 0 }, { "label": "Yes", "value": 1 } ], "show_points": true, "tips_en": "Any method except latex; <abbr title = \"Enzyme-linked immunosorbent assay\">ELISA</abbr> or nephelometry preferred", "type": "toggle" }, { "conditionality": "articulardisease == 1", "default": 0, "label_en": "Current dactylitis (swelling of an entire digit) or history of dactylitis recorded by a rheumatologist", "md_calc_info_concept": null, "name": "four", "option_fhir_rules": null, "optional": false, "options": [ { "label": "No", "value": 0 }, { "label": "Yes", "value": 1 } ], "show_points": true, "tips_en": "", "type": "toggle" }, { "conditionality": "articulardisease == 1", "default": 0, "label_en": "Juxtaarticular new bone formation on hand or foot x-ray", "md_calc_info_concept": null, "name": "five", "option_fhir_rules": null, "optional": false, "options": [ { "label": "No", "value": 0 }, { "label": "Yes", "value": 1 } ], "show_points": true, "tips_en": "Ill-defined ossification near joint margins excluding osteophyte formation", "type": "toggle" } ]

instructions

published

2022-04-21T20:28:08.778Z

purpose

[ "Diagnosis" ]

search_terms

[ "CASPAR", "psoriatic arthritis", "arthritis", "psa", "caspar criteria" ]

seo

{ "keywords_en": "CASPAR, psoriatic arthritis, arthritis, psa, caspar criteria", "meta_description_en": "The CASPAR Criteria for Psoriatic Arthritis provides criteria for psoriatic arthritis diagnosis." }

specialty

[ "Dermatology", "Family Practice", "Internal Medicine", "Orthopedics", "Primary Care", "Rheumatology" ]

departments

[ "Dermatologic", "Musculoskeletal", "Rheumatologic" ]

tags

[]

version_number

1

versions

[]

related

[ { "calcId": 10514, "short_title_en": "2012 Criteria for PMR", "slug": "2012-eular-acr-classification-criteria-polymyalgia-rheumatica" }, { "calcId": 10092, "short_title_en": "ACR/EULAR 2010 RA Criteria", "slug": "acr-eular-2010-rheumatoid-arthritis-classification-criteria" }, { "calcId": 10023, "short_title_en": "Leiden Rule for Arthritis", "slug": "leiden-clinical-prediction-rule-undifferentiated-arthritis" } ]

ismed

false

section

[ "whenToUseViewed", "pearlsPitfallsViewed", "whyUseViewed", "nextStepsViewed", "evidenceViewed" ]

cleaned_departments

[ "dermatology", "orthopedics", "rheumatology" ]

cleaned_use

[ "Use in patients with inflammatory arthritis, enthesitis, or spondylitis where psoriatic arthritis (PsA) is a diagnostic consideration." ]

pub

false