What is the name of this clincial feature?



{{c1::Woronoff rings, seen in psoriasis}}

What is the name of this clincial feature?<br><br><img alt="https://upload.wikimedia.org/wikipedia/commons/1/1c/Woronoff_sign_psoriasis.jpg" src="36259c2e9bfdfd2a99bcdc3df08ca020.webp"><br><br>{{c1::Woronoff rings, seen in psoriasis}}

Masryyy, CC BY-SA 4.0, via Wikimedia Commons

- Ring of hypopigmentation around regressing psoriasis lesions
- Aetiology unclear

<i><span style="font-size: 10pt;"><i><a href="https://commons.wikimedia.org/wiki/File:Woronoff_sign_psoriasis.jpg">Masryyy</a>,&nbsp;<a href="https://creativecommons.org/licenses/by-sa/4.0">CC BY-SA 4.0</a>, via Wikimedia Commons</i></span></i><br><br>- Ring of hypopigmentation around regressing psoriasis lesions<br>- Aetiology unclear

<img src="1635434b32327f0044275c7988fc09c5.webp">

eTG - Psoriasis https://app-tg-org.au.eu1.proxy.openathens.net/viewTopic?etgAccess=true&guidelinePage=Dermatology&topicfile=c_DMG_Psoriasis_topic_1&guidelinename=auto&sectionId=c_DMG_Psoriasis_topic_1#c_DMG_Psoriasis_topic_1 Published/Amended August 2022, Accessed 4 June 2025

<span style="color: rgb(0, 0, 0); font-family: Arial; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">eTG - Psoriasis&nbsp;</span><a href="https://app-tg-org.au.eu1.proxy.openathens.net/viewTopic?etgAccess=true&amp;guidelinePage=Dermatology&amp;topicfile=c_DMG_Psoriasis_topic_1&amp;guidelinename=auto%C2%A7ionId=c_DMG_Psoriasis_topic_1#c_DMG_Psoriasis_topic_1" style="max-width: 100%; font-family: Arial; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px;">https://app-tg-org.au.eu1.proxy.openathens.net/viewTopic?etgAccess=true&amp;guidelinePage=Dermatology&amp;topicfile=c_DMG_Psoriasis_topic_1&amp;guidelinename=auto&amp;sectionId=c_DMG_Psoriasis_topic_1#c_DMG_Psoriasis_topic_1</a><span style="color: rgb(0, 0, 0); font-family: Arial; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">&nbsp;Published/Amended August 2022, Accessed 4 June 2025</span>

Prinz JC. The Woronoff Ring in Psoriasis and the Mechanisms of Post-inflammatory Hypopigmentation. Acta dermato-venereologica. 2020 Jan 30;100(3):5648. Accessed June 2025. https://pmc.ncbi.nlm.nih.gov/articles/PMC9128907/

Prinz JC. The Woronoff Ring in Psoriasis and the Mechanisms of Post-inflammatory Hypopigmentation. Acta dermato-venereologica. 2020 Jan 30;100(3):5648. Accessed June 2025.&nbsp;<a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC9128907/">https://pmc.ncbi.nlm.nih.gov/articles/PMC9128907/</a>