TOPLINE:

In a large population-based study, patients with vitiligo faced a substantial burden of affective and stress-related mental health disorders (MHDs). The morbidity profile largely resembled that of atopic dermatitis (AD) but differed significantly from that of psoriasis.

METHODOLOGY:

• Researchers conducted a retrospective health service study analysing a 40% anonymised sample of German statutory health insurance claims data from DAK-Gesundheit and included 2,885,984 insured individuals (mean age, 48.6 years; 56.8% women) between 2016 and 2020.
• Propensity score matching was performed in a 1:3 ratio on the basis of age and sex to generate comparable cohorts. In 2020, a total of 4631 patients (mean age, 57 years; 2919 women) were diagnosed with vitiligo, corresponding to a prevalence of 0.19% (95% CI, 0.19%-0.20%), and were compared to cohorts with AD and psoriasis and individuals without vitiligo.
• Three alternative annual case definitions with increasing diagnostic stringency were developed for the validation of mapped MHDs using external clinical reference standards: Case definition 1 required at least one MHD diagnosis; case definition 2 required at least one MHD diagnosis with medication or therapy; case definition 3 required at least one MHD diagnosis and specific medication with high validity.
• Primary outcomes included the estimation of the prevalence of MHDs in patients with vitiligo and the comparison of relative risks (RRs) across the cohorts.

TAKEAWAY:

• Patients with vitiligo showed the highest prevalence of depressive episodes, ranging from 8.85% (95% CI, 8.04%-9.67%) under case definition 3 to 19.15% (95% CI, 18.02%-20.29%) under case definition 1, and the prevalence of somatoform disorders ranged from 5.27% (95% CI, 4.63%-5.91%) to 17.90% (95% CI, 16.80%-19.01%).
• Under case definition 1, patients with vitiligo had a 24% (95% CI, 1.02-1.50) higher risk for sexual dysfunction and a 58% (95% CI, 0.19-0.93) lower risk for schizoaffective disorders than those with AD. No significant associations were observed for case definitions 2 and 3.
• Compared to patients with psoriasis, those with vitiligo had a higher risk for obsessive-compulsive personality disorder (RR, 2.36; 95% CI, 1.38-4.03) and a 129% higher risk for emotional disorders during childhood (95% CI, 1.14-4.61), and consistent effects were observed across case definitions for hyperkinetic disorders (RR, 1.58-1.93).
• Compared to persons without vitiligo, those with vitiligo showed consistently elevated risks for social phobia (RR, 2.10-2.81), phobic disorders, and anxiety disorders (RR, 1.64-1.93) across all case definitions.

IN PRACTICE:

"[The study] findings highlight the heterogeneity of psychosocial comorbidity in dermatological diseases and caution against generalising psychological distress across different clinical presentations," the authors wrote.

SOURCE:

This study was led by Theresa Klinger, Institute for Health Services Research in Dermatology and Nursing, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. It was published online on March 04, 2026, in BMJ Open.

LIMITATIONS:

Claims data were collected for reimbursement purposes and may be affected by misclassification, incomplete outpatient coding, and the absence of inpatient medication data, potentially distorting prevalence estimates. Moreover, the underreporting of untreated morbidity and missing billing data for non-reimbursed services, such as alternative therapies, could have led to the underestimation of true prevalence.

DISCLOSURES:

This study received financial support from Incyte Corporation, Wilmington, Delaware. One author reported serving as a consultant and lecturer and/or receiving research grants from AbbVie, Almirall, Incyte, and Pfizer.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.