Autoimmune thyroid disease in vitiligo: multivariate analysis indicates intricate pathomechanisms

Area of Science:

• Dermatology
• Endocrinology
• Autoimmunity

Background:

• Vitiligo, specifically nonsegmental vitiligo (NSV), is frequently linked to thyroid autoimmunity.
• However, limited research has employed multivariate logistic regression to investigate this association.

Purpose of the Study:

• To identify key factors associated with autoimmune thyroid disease (AITD) in a large cohort of vitiligo patients.
• To understand the clinical characteristics differentiating vitiligo with and without AITD.

Main Methods:

• A prospective observational study of 626 vitiligo/NSV patients was conducted over six years.
• Data collected via the Vitiligo European Task Force (VETF) questionnaire and serum antibody analysis.
• Univariate and multivariate logistic regression analyses were used to identify associated factors.

Main Results:

• 131 out of 626 patients (20.9%) had AITD.
• Factors positively associated with AITD in univariate analysis included stress onset, family history of AITD, body surface area, and disease duration.
• Independently associated factors for AITD in vitiligo patients were female sex, age at vitiligo onset, personal history of autoimmune disease, and trunk localization.

Conclusions:

• Vitiligo co-occurring with AITD exhibits distinct clinical features compared to vitiligo alone.
• Female patients, those with longer disease duration, and extensive body surface involvement are at higher risk for AITD.
• These patients warrant regular screening for thyroid dysfunction and autoantibodies.