Spondyloarthritis & psoriatic arthritis
Psoriasis seems often underdiagnosed in patient with axial spondyloarthritis
Authors' conclusion
Especially mild psoriasis seems often underdiagnosed in patients with axSpA using a patient questionnaire with prototypical pictures of psoriasis lesions.
Study context
- Population
- Patients with axial spondyloarthritis (axSpA) in the Dutch Groningen Leeuwarden Axial Spondyloarthritis (GLAS) cohort included before June 2016592 questionnaires sent
- Participants
- 448 patients
- Exposure
- Self-reported psoriasis symptoms without verified diagnosis vs confirmed psoriasis diagnosis
- Confirmed psoriasis diagnosisn = 28reference
- Outcome
- Psoriasis self-screening and verified prevalence
Methodological detailsquestionnaire-based self-screening with prototypical color pictures
- Questionnaire-based self-screening with prototypical color pictures
Main finding
As reported in the abstract
Positive self-screening for psoriasis symptoms, currently or in the past
58
13%
Psoriasis diagnosis verified by medical records among positive screens
28 (48%) of 58
Psoriasis prevalence rate
6.3%
Observational data: associations, not effects.
Further findings
| Outcome | Confirmed psoriasis diagnosis | P value |
|---|---|---|
| Mild rather than moderate-severe psoriasis symptomsUnverified vs Confirmed | 3% | P = 0.02 |
| Lesions on torsoUnverified vs Confirmed | 18% | P = 0.04 |
| Lesions on intergluteal cleftUnverified vs Confirmed | 25% | P = 0.02 |
| Lesions on legsUnverified vs Confirmed | 43% | P < 0.01 |
- Mild rather than moderate-severe psoriasis symptoms: Unverified 25%
- Lesions on torso: Unverified 3%
- Lesions on intergluteal cleft: Unverified 0%
- Lesions on legs: Unverified 7%
Only mild symptoms among patients reporting currently active psoriasis (n=31)
- Only mild psoriasis symptoms
- 74%
Original publication
Psoriasis seems often underdiagnosed in patient with axial spondyloarthritis. Arthritis Res Ther. Published 9 August 2023. doi:10.
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