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- Presentation
Common and Rare Forms of Vitiligo: Classification, Activity Signs, and Clinical Assessment Tips
Description
The talk reviewed the classification of vitiligo, including common forms such as segmental and non-segmental vitiligo and several rarer variants. Segmental vitiligo tends to begin early, spread quickly, and then stabilize, while non-segmental vitiligo usually starts later and may relapse over time; mixed cases can show both patterns. Rare forms discussed included inflammatory vitiligo, blue vitiligo, leukoderma punctata, follicular vitiligo, and mixed vitiligo, with some forms being especially difficult to repigment. A key theme was the importance of recognizing activity signs at the first visit and during follow-up, because treatment choices depend on whether the disease is active. Important signs of activity include confetti-like depigmentation, trichrome lesions, and Koebner phenomenon, often seen at friction sites. The speaker emphasized the value of Wood’s lamp examination, careful assessment of hair follicle involvement, and asking about repeated daily friction or trauma that may worsen lesions. A simple scoring approach combining these activity markers across body areas may help estimate progression. Overall, the message was that active vitiligo should be treated promptly and aggressively to prevent further spread and improve outcomes.
View moreConclusions
- Vitiligo is somewhat less common than historically believed, with adult prevalence estimated at about 0.67% worldwide.
- Clinicians should distinguish segmental from non-segmental vitiligo because they differ in age of onset, progression, treatment approach, and prognosis.
- Several rare vitiligo variants exist, including inflammatory, blue, leukoderma punctata-like, mixed, and follicular forms, each with distinct clinical behavior.
- Follicular involvement and white hair make repigmentation harder, suggesting that different pigment reservoirs and targets may be involved.
- In non-segmental vitiligo, disease activity fluctuates over time, so treatment decisions should be based on whether lesions are active or stable.
- Wood lamp examination is essential both for detecting subtle disease activity and for monitoring progression or repigmentation over time.
- Confetti-like depigmentation, trichrome lesions, and Koebner phenomenon are key clinical markers of active vitiligo.
- Repeated friction or daily activities can trigger or worsen lesions, so identifying and reducing mechanical triggers may help limit progression.
- A substantial proportion of patients presenting with vitiligo show at least one clinical sign of activity, meaning active disease is common at first assessment.
- Active vitiligo should be treated urgently and aggressively to prevent rapid spread and improve the chance of repigmentation.
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