Karan Lal, DO, MS, FAAD

Body surface area offers a simple starting point for gauging vitiligo severity, but the panel argues that phenotype markers, anatomic location, and disease activity carry more weight in shaping treatment urgency than surface area alone.

Vitiligo's clinical course splits into segmental and non-segmental presentations, each carrying a distinct prognosis. Dr. Rosmarin explains how disease activity, not just extent, determines whether a patient needs urgent intervention or watchful monitoring.