[1]
Brezinski EA, Dhillon JS, Armstrong AW. "Economic Burden of Psoriasis in the United States: A Systematic Review."
JAMA Dermatology, 2015;151(6):651–658. Direct costs $51.7B–$63.2B, indirect costs $23.9B–$35.4B, comorbidity-attributable costs ~$36.4B; total annual U.S. cost of psoriasis ≈ $112 billion (2013 USD). ~8 million Americans affected.
[2]
Rheumatology Advisor. "Psoriatic Arthritis: Overcoming Challenges of Differential Diagnosis." 2024. Of 8 million Americans with psoriasis, 30%–33% are reported to also have psoriatic arthritis; undiagnosed psoriatic arthritis reported in 9% of psoriasis patients; rates as high as 41% reported in some cohorts.
[3]
Mapping opportunities for the earlier diagnosis of psoriasis in primary care settings in the UK.
British Journal of General Practice / PMC, 2022. Multicentre international observational study: average diagnostic delay for psoriasis estimated at 1.6 years (SD 4.8).
[4]
Comparative Efficacy and Relative Ranking of Biologics and Oral Therapies for Moderate-to-Severe Plaque Psoriasis: A Network Meta-analysis.
Dermatology and Therapy, 2021. Apremilast PASI90 response rate 12.4% (SUCRA 0.090) vs. ixekizumab 72.9%, risankizumab 72.5%, brodalumab 72.0%.
[5]
Same network meta-analysis (Dermatology and Therapy, 2021): full PASI90 ranking — ixekizumab 72.9%, risankizumab 72.5%, brodalumab 72.0%, guselkumab 65.0%, secukinumab 65.0%, infliximab 56.8%, ustekinumab ~46–48%, adalimumab 43.0%, etanercept 18.0%.
[6]
Egilman AC et al. Efficiency-frontier cost analysis of psoriasis biologics, summarized in Dermatology Times, 2024. Net annual U.S. treatment costs ranged from $1,664 (infliximab-dyyb) to $79,277 (risankizumab); median net annual cost across 13 biologics was $34,965 — over 3× peer-country pricing.
[7]
Diagnostic Delay in Psoriatic Arthritis: A Population-based Study.
The Journal of Rheumatology, 2021. Olmsted County cohort (n=164): median time from symptom onset to psoriatic arthritis diagnosis was 2.5 years (IQR 0.5–7.3); >50% had diagnostic delay >2 years.
[8]
Increased Musculoskeletal Surgery Rates During Diagnostic Delay in Psoriatic Arthritis: A Retrospective Cohort Study. 2024/2025 (n=84). Mean diagnostic delay 7.49 years; 27.4% underwent ≥1 musculoskeletal surgery during the delay period, at a significantly higher annual rate than post-diagnosis.
[9]
Employer Health Innovation Co. "Soaring Psoriasis: Market Trends and Opportunities for Psoriatic Conditions," 2023, citing Merola JF et al. All-cause annual healthcare costs per psoriatic arthritis patient ~$30,000 vs. ~$11,000 for plaque psoriasis alone; cost of psoriatic disease overall (skin + joints) reported at $135 billion/year (2013 estimate).
[10]
Economic burden of comorbidities in psoriasis patients in the United States.
Journal of Medical Economics / PMC, retrospective claims database (n=56,406). Cardiovascular disease, diabetes, and psoriatic arthritis were among the most prevalent comorbidities and independently increased direct and indirect costs.
[11]
American Autoimmune Related Diseases Association (AARDA), compiled economic burden report. Lost productivity ("presenteeism") among patients with psoriasis estimated at approximately $9.9 billion nationally, or $2,961 per affected worker annually.