Investigating the epidemiological relationship between vitiligo and psoriasis: a population-based study

Khalaf Kridin*, Keren Lyakhovitsky, Erez Onn, Anna Lyakhovitsky, Ralf Ludwig, Orly Weinstein, Arnon D. Cohen

*Corresponding author for this work
2 Citations (Scopus)


Background: The association of vitiligo with psoriasis is inconsistent in the current literature. Objective: To assess the bidirectional association between vitiligo and psoriasis. Methods: A population-based study was performed to compare vitiligo patients (n = 20,851) with age-, sex- and ethnicity-matched control subjects (n = 102,475) regarding the incidence of new-onset and the prevalence of preexisting psoriasis. Adjusted hazard ratios (HRs) and adjusted odds ratios (ORs) were calculated by cox regression and logistic regression, respectively. Results: The incidence rate of new-onset psoriasis was estimated at 7.9 (95% CI 6.4–9.7) and 4.7 (95% CI 4.1–5.3) cases per 10,000 person-years among patients with vitiligo and controls, respectively. Patients with vitiligo experienced an increased risk of psoriasis (fully-adjusted HR 1.71; 95% CI 1.35–2.17; P < 0.001). On the other hand, the odds of vitiligo were only marginally elevated among patients with preexisting psoriasis (fully-adjusted OR 1.19; 95% CI 1.01–1.40; P = 0.051). Compared to other patients with vitiligo, those with vitiligo and comorbid psoriasis were older at the onset of the disease and had a greater prevalence of metabolic and cardiovascular comorbidities. Conclusions: A diagnosis of vitiligo predisposes individuals to develop subsequent psoriasis. Clinicians managing dermatologic patients ought to be aware of this comorbidity. Further research is required to explicate the pathomechanism underlying this epidemiological observation.

Original languageEnglish
JournalArchives of Dermatological Research
Issue number3
Pages (from-to)395-400
Number of pages6
Publication statusPublished - 04.2023

Research Areas and Centers

  • Academic Focus: Center for Infection and Inflammation Research (ZIEL)
  • Centers: Center for Research on Inflammation of the Skin (CRIS)

DFG Research Classification Scheme

  • 204-05 Immunology
  • 205-19 Dermatology

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