Assessing the dynamic changes in vitiligo: reliability and validity of the Vitiligo Disease Activity Score (<scp>VDAS</scp>) and Vitiligo Disease Improvement Score (<scp>VDIS</scp>)

Abstract

The VDAS and VDIS appear to be valid, reliable and feasible instruments to score the evolution of vitiligo lesions. This accommodates the current urgent need for a simple, standardized and practical assessment of vitiligo activity and improvement over time.