GRAPPA App vs Vitiligo Calculator

This app from GRAPPA (Group for Research and Assessment of Psoriasis and Psoriatic Arthritis) is designed to support the assessment of patients with psoriatic arthritis and psoriasis. It allows users to calculate a patient’s MDA and assess skin disease (using either PASI or BSA) through specially designed calculators. The app also includes PsAID, PEST and HAQ questionnaires which can be completed directly by patients in a range of languages and a selection of slides from the GRAPPA resources. Visit http://www.grappanetwork.org/ to find out more about GRAPPA.

This App includes the calculator of the Vitiligo Extent Score (VES). The VES is a measure to express the overall vitiligo involvement of the body (extent). It is designed for physicians to support the assessment of the vitiligo extent.  It can be used in clinical trials and daily practice. With this App the total extent score or the extent score per body part can be calculated. The calculation can also be summarised in a PDF file. This file can be sent to you email address. Construction was performed at the Ghent University Hospital/Ghent University by Prof. N van Geel and Prof. R. Speeckaert (copyright). The vitiligo extent score was validated (paper version) in cooperation with the International vitiligo score working group. Visit https://www.vitiligo-calculator.com to find out more about the VES. A blank version of the VES tool to print can be downloaded by this website. This printed template can be used to mark the vitiligo extent and to calculate the score later. This calculator includes pictures that reflect vitiligo lesions of different degrees of extent. For each area one picture can be selected, which best represents the extent of the vitiligo lesions. In order to ensure a more accurate calculation, each picture gives you several sub-options that can be selected if necessary. After choosing a picture (or a second option if needed), the score [i.e. percentage of body surface area (BSA) involved] will be automatically calculated. If no picture or second option is selected, this will automatically result in 0% of body surface area involved.