Vitiligo Calculator

The VES (Vitiligo Extent Score) is a measure to express the overall vitiligo involvement of the body (extent).
This calculator (including VES, SAVES, VESplus and VSAS) is intended for use by physicians in clinical trials and daily practice for the assessment of vitiligo.

VES Calculator VESplus Calculator SA-VES Calculator VSAS Calculator

International Vitiligo Score Working group

  • Construction and copyright of the VES calculator:
    Nanja van Geel (coordinator), Reinhart Speeckaert. Department of Dermatology, Ghent University Hospital, Gent, Belgium.

  • International group:
    • Nanja van Geel (BE)
    • Reinhart Speeckaert (BE)
    • Marcel Bekkenk (NL)
    • Albert Wolkerstorfer (NL)
    • Cecilia Prinsen (NL)
    • Viktoria Eleftheriadou (UK)
    • Khaled Ezzedine (FR)
    • Alain Taieb (FR)
    • Thierry Passeron (FR)
    • Mauro Picardo (IT)
    • John Harris (US)
    • Amit Pandya (US)
    • Iltefat Hamzavi (US)

  • International framework:
    Vitiligo European Task Force (VETF) and Vitiligo Global Issues Consensus Conferences (VGICC) group

About the VES Calculator

The pictures that reflect the extent of the vitiligo lesions can be selected by this tool. The calculator provides a score that can be expressed in percentage of the body surface area (BSA) involvement or grade of extent per region (Grade 0 tot 6).

The video below includes an explanation of the VES, VESplus and SAVES, as well as instructions on how to utilize these scores.


van Geel N, Lommerts J, Bekkenk M, Wolkerstorfer A, Prinsen CA, Eleftheriadou V, Taïeb A, Picardo M, Ezzedine K, Speeckaert R.
Development and Validation of the Vitiligo Extent Score (VES): an International Collaborative Initiative.
J Invest Dermatol. 2016 May;136(5):978-84.

van Geel N, Lommerts JE, Bekkenk MW, Prinsen CA, Eleftheriadou V, Taieb A, Picardo M, Ezzedine K, Wolkerstorfer A, Speeckaert R; international Vitiligo Score Working Group..
Development and validation of a patient-reported outcome measure in vitiligo: The Self Assessment Vitiligo Extent Score (SA-VES).
J Am Acad Dermatol. 2017 Mar;76(3):464-471.

van Geel N, Bekkenk M, Lommerts JE, Ezzedine K, Harris J, Hamzavi I, Eleftheriadou V, Picardo M, Taieb A, Prinsen CA, Wolkerstorfer A, Speeckaert R.
The Vitiligo Extent Score (VES) and the VESplus are responsive instruments to assess global and regional treatment response in patients with vitiligo.
J Am Acad Dermatol. 2018 Aug;79(2):369-371.

van Geel N, Wolkerstorfer A, Lommerts JE, Ezzedine K, Eleftheriadou V, Hamzavi I, Harris J, Picardo M, Taieb A, Prinsen CAC, Bekkenk M, Speeckaert R.
Validation study of the Vitiligo Extent Score-plus.
J Am Acad Dermatol. 2018 May;78(5):1013-1015.

van Geel N, Wolkerstorfer A, Ezzedine K, Pandya AG, Bekkenk M, Grine L, Van Belle S, Lommerts JE, Hamzavi I, Harris JE, Eleftheriadou V, Esmat S, Kang HY, Kumarasinghe P, Lan CE, Parsad D, Raboobee N, Flora Xiang L, Suzuki T, Prinsen CA, Taieb A, Picardo M, Speeckaert R; participants of the Rome International VGICC /VIS Workshop.
Validation of a physician global assessment tool for vitiligo extent: Results of an international vitiligo expert meeting.
Pigment Cell Melanoma Res. 2019 Sep;32(5):728-733.

van Geel N, Passeron T, Wolkerstorfer A, Speeckaert R, Ezzedine K.
Reliability and validity of the Vitiligo Signs of Activity Score (VSAS).
Br J Dermatol. 2020 Nov;183(5):883-890.

van Geel N, Hamzavi I, Kohli I, Wolkerstorfer A, Lim HW, Bae JM, Lui H, Harris JE, Pandya AG, Thng Tien Guan S, Abdallah M, Esmat S, Seneschal J, Speeckaert R, Grine L, Kang HY, Raboobee N, Xiang LF, Bekkenk M, Picardo M, Taieb A.
Standardizing serial photography for assessing and monitoring vitiligo: A core set of international recommendations for essential clinical and technical specifications.
J Am Acad Dermatol. 2020 Dec;83(6):1639-1646.

van Geel N, Uitentuis SE, Zuidgeest M, Wolkerstorfer A, Bekkenk MW, Moock C, Van Goethem C, Verlaeckt E, Smet C, Grine L, Speeckaert R.
Validation of a Patient Global Assessment for extent, severity and impact to define the severity strata for the Self Assessment Vitiligo Extent Score (SA-VES).
J Eur Acad Dermatol Venereol. 2021 Jan;35(1):216-221.