Key clinical point: Proton pump inhibitor (PPI) use was positively associated with the risk of developing psoriasis.
Major finding: Compared with PPI use of 30 or less cumulative defined daily doses ( cDDD), PPI use of 120-365 (adjusted odds ratio [aOR], 1.52; 95% confidence interval [CI], 1.31-1.76) and higher than 365 (aOR, 1.54; 95% CI, 1.22-1.93) was associated with a significantly higher risk for psoriasis. Lansoprazole (OR, 1.25; 95% CI, 1.11-1.41), but not pantoprazole, esomeprazole, rabeprazole, or omeprazole, significantly contributed to psoriasis risk.
Study details: Findings are from a nationwide nested case-control study including 5,756 patients with prior exposure to PPIs, of which 2,878 patients had psoriasis.
Disclosures: The study was supported by Taipei Veterans General Hospital and Ministry of Science and Technology, Taiwan. The authors declared no potential conflict of interests.
Source: Li CY et al. Dermatology. 2021 Sep 2. doi: 10.1159/000517515 .