Prevalence and risk factors associated with psoriatic arthritis among patients with psoriasis

Abstract

IntroductionPsoriatic arthritis is a chronic, autoimmune inflammatory arthritis that occurs with psoriasis and has profound impact on patients' physical and psychological well‐being. This study aims to determine the prevalence and risk factors associated with psoriatic arthritis among patients with psoriasis.MethodsA single‐center, cross‐sectional study was conducted over a 12‐month period at the Dermatology Clinic, Hospital Pulau Pinang, Malaysia involving all consecutive psoriasis patients. CASPAR (ClASsification of Psoriatic ARthritis) criteria were used to diagnose psoriatic arthritis.ResultsA total of 360 patients with psoriasis were recruited, of whom 107 (29.7%) had psoriatic arthritis. Psoriatic arthritis patients had equal gender distribution and the mean age of arthritis onset was 40.7 ± 12.8 years. Psoriasis preceded arthritis in 81.3% of patients (n = 87) with a mean latency interval of 10.5 years. Polyarthropathy was the predominant subtype affecting 46.8% (n = 50) of patients, followed by oligoarthropathy (22.4%, n = 24), axial joint disease (5.6%, n = 6), predominant distal interphalangeal joint disease (2.8%, n = 3), and mixed subtype (22.4%, n = 24). Enthesitis and dactylitis occurred in 12.1% (n = 13) and 20.6% (n = 22) of arthritis patients, respectively, and deformity was present in 37.4% (n = 40). Psoriatic arthritis was significantly associated with being an ever smoker (adjusted odds ratio [aOR] 0.41; 95% confidence interval [CI] 0.18–0.91, p = .029), genital psoriasis (aOR 2.25; 95% CI 1.17–4.33, p = .015), and increased erythrocyte sedimentation rate (ESR) (aOR 1.02; 95% CI 1.01–1.04, p = .005) and C‐reactive protein [CRP] (aOR 1.04; 95% CI 1.00–1.08, p = .040).ConclusionOur study showed a high prevalence of psoriatic arthritis among the psoriasis cohort. Genital involvement, and increased ESR and CRP were associated with psoriatic arthritis among patients with psoriasis.

From psoriasis to psoriatic arthritis: epidemiological insights from a retrospective cohort study of 74,046 patients

“…On the other hand, considering smoking as an external trigger documented to worsen Psoriasis Area Severity Index (PASI) scores ( 19 , 20 ). And is thought to increase the risk of PsA onset in PsO patients ( 21 ), we chose smoking as an external factor to see its influence on PsA development in PsO patients. To access our hypotheses, we utilized the TriNetX database to investigate whether (a) PsO patients with type 2 DM face an elevated risk of developing PsA compared to those without type 2 DM; (b) PsO patients who smoke face a higher risk of PsA; and (c) PsO patients with type 2 DM who smoke are more likely to develop PsA than those who do not smoke.…”