Clinique Dermatologique

19/11/2025

🌍✨ 𝐀 𝐡𝐢𝐬𝐭𝐨𝐫𝐢𝐜 𝐩𝐚𝐫𝐭𝐧𝐞𝐫𝐬𝐡𝐢𝐩 𝐟𝐨𝐫 𝐬𝐜𝐢𝐞𝐧𝐜𝐞 𝐚𝐧𝐝 𝐢𝐧𝐧𝐨𝐯𝐚𝐭𝐢𝐨𝐧!

We are proud to announce the collaboration between the 𝐏𝐫𝐢𝐬𝐜𝐚 𝐒𝐚𝐩𝐢𝐞𝐧𝐭𝐢𝐚 𝐈𝐧𝐬𝐭𝐢𝐭𝐮𝐭𝐞 (Switzerland) and the 𝐀𝐠𝐫𝐚𝐫𝐢𝐚𝐧 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐢𝐭𝐲 𝐨𝐟 𝐇𝐚𝐯𝐚𝐧𝐚 “𝐅𝐫𝐮𝐜𝐭𝐮𝐨𝐬𝐨 𝐑𝐨𝐝𝐫𝐢́𝐠𝐮𝐞𝐳 𝐏𝐞́𝐫𝐞𝐳” in Cuba. This partnership paves the way for innovative projects in 𝐦𝐞𝐝𝐢𝐜𝐢𝐧𝐞, 𝐛𝐢𝐨𝐭𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲, 𝐝𝐞𝐫𝐦𝐚𝐭𝐨𝐥𝐨𝐠𝐲, 𝐚𝐧𝐝 𝐬𝐮𝐬𝐭𝐚𝐢𝐧𝐚𝐛𝐥𝐞 𝐚𝐠𝐫𝐢𝐜𝐮𝐥𝐭𝐮𝐫𝐞, while strengthening scientific diplomacy between Europe and Latin America.

A pivotal role has been played by Prof. Torello Lotti , Rector of the Prisca Sapientia Institute, whose vision and leadership make this ambitious collaboration possible.

This initiative demonstrates the power of 𝐤𝐧𝐨𝐰𝐥𝐞𝐝𝐠𝐞 𝐚𝐬 𝐚 𝐛𝐫𝐢𝐝𝐠𝐞 𝐛𝐞𝐭𝐰𝐞𝐞𝐧 𝐧𝐚𝐭𝐢𝐨𝐧𝐬 and marks an important step toward a shared scientific future.

🔗 Learn more:
https://www.priscasapientia.university/prisca-sapientia-institute-cuba/

In an atmosphere of diplomatic prestige and academic excellence, the Prisca Sapientia Institute, based in Zurich, Switzerland, has officially signed a

19/11/2025

🌍✨ 𝐈𝐌𝐂𝐀𝐒 𝐖𝐨𝐫𝐥𝐝 𝐂𝐨𝐧𝐠𝐫𝐞𝐬𝐬 𝟐𝟎𝟐𝟔 – 𝐏𝐚𝐫𝐢𝐬 🇫🇷
Our session is now 𝐨𝐟𝐟𝐢𝐜𝐢𝐚𝐥𝐥𝐲 𝐨𝐧𝐥𝐢𝐧𝐞 𝐚𝐧𝐝 𝐜𝐨𝐦𝐩𝐥𝐞𝐭𝐞!

👉 𝑃𝑖𝑔𝑚𝑒𝑛𝑡𝑎𝑡𝑖𝑜𝑛 𝑓𝑟𝑜𝑚 𝑎𝑟𝑜𝑢𝑛𝑑 𝑡ℎ𝑒 𝑤𝑜𝑟𝑙𝑑 (𝑖𝑛 𝑐𝑜𝑙𝑙𝑎𝑏𝑜𝑟𝑎𝑡𝑖𝑜𝑛 𝑤𝑖𝑡ℎ 𝐼𝑆𝐷 & 𝑊𝐷𝐶)
🔗 Programme / Program:
https://www.imcas.com/en/imcas-world-congress-2026/program/session/56559/pigmentation-from-around-the-world
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I am honored to be among the speakers at the 𝐈𝐌𝐂𝐀𝐒 𝐖𝐨𝐫𝐥𝐝 𝐂𝐨𝐧𝐠𝐫𝐞𝐬𝐬 𝟐𝟎𝟐𝟔, one of the world’s leading scientific events in dermatology and aesthetic medicine, taking place in 𝐏𝐚𝐫𝐢𝐬 𝐟𝐫𝐨𝐦 𝐉𝐚𝐧𝐮𝐚𝐫𝐲 𝟑𝟎 𝐭𝐨 𝐅𝐞𝐛𝐫𝐮𝐚𝐫𝐲 𝟏, 𝟐𝟎𝟐𝟔.

🎤 𝐌𝐲 𝐥𝐞𝐜𝐭𝐮𝐫𝐞:
𝑈𝑛𝑑𝑒𝑟𝑠𝑡𝑎𝑛𝑑𝑖𝑛𝑔 ℎ𝑦𝑝𝑒𝑟𝑝𝑖𝑔𝑚𝑒𝑛𝑡𝑎𝑡𝑖𝑜𝑛 𝑖𝑛 𝑑𝑎𝑟𝑘 𝑠𝑘𝑖𝑛: 𝑐𝑙𝑖𝑛𝑖𝑐𝑎𝑙 𝑟𝑒𝑎𝑙𝑖𝑡𝑖𝑒𝑠 𝑎𝑛𝑑 𝑔𝑙𝑜𝑏𝑎𝑙 𝑝𝑒𝑟𝑠𝑝𝑒𝑐𝑡𝑖𝑣𝑒𝑠
🗓️ 𝐅𝐫𝐢𝐝𝐚𝐲, 𝐉𝐚𝐧𝐮𝐚𝐫𝐲 𝟑𝟎, 𝟐𝟎𝟐𝟔 – 𝟏𝟏:𝟒𝟐 𝐭𝐨 𝟏𝟏:𝟓𝟒 𝐚𝐦
📌 𝐑𝐨𝐨𝐦 𝐌𝐚𝐢𝐥𝐥𝐨𝐭 – 𝐋𝐞𝐯𝐞𝐥 𝟐

This international session will bring together experts from around the globe to discuss:
✔️ pigmentation disorders across phototypes,
✔️ innovative therapeutic approaches,
✔️ clinical specificities of dark skin,
✔️ and global perspectives on inclusive dermatology.

Organized in collaboration with the International Society of Dermatology (ISD) and the Worldwide Dermatology Collaboration Society (WDC), this session provides a unique platform for scientific exchange and global insight.

It is a true privilege to contribute to this worldwide dialogue on skin diversity. 🌍✨
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19/11/2025

🌍✨ 𝐈𝐌𝐂𝐀𝐒 𝐖𝐨𝐫𝐥𝐝 𝐂𝐨𝐧𝐠𝐫𝐞𝐬𝐬 𝟐𝟎𝟐𝟔 – 𝐏𝐚𝐫𝐢𝐬 🇫🇷

Notre session est désormais 𝐨𝐟𝐟𝐢𝐜𝐢𝐞𝐥𝐥𝐞𝐦𝐞𝐧𝐭 𝐞𝐧 𝐥𝐢𝐠𝐧𝐞 𝐞𝐭 𝐜𝐨𝐦𝐩𝐥𝐞̀𝐭𝐞 !

👉 𝑃𝑖𝑔𝑚𝑒𝑛𝑡𝑎𝑡𝑖𝑜𝑛 𝑓𝑟𝑜𝑚 𝑎𝑟𝑜𝑢𝑛𝑑 𝑡ℎ𝑒 𝑤𝑜𝑟𝑙𝑑 (𝑖𝑛 𝑐𝑜𝑙𝑙𝑎𝑏𝑜𝑟𝑎𝑡𝑖𝑜𝑛 𝑤𝑖𝑡ℎ 𝐼𝑆𝐷 & 𝑊𝐷𝐶)
🔗 Programme / Program:
https://www.imcas.com/en/imcas-world-congress-2026/program/session/56559/pigmentation-from-around-the-world

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Je suis honoré de faire partie des conférenciers du 𝐈𝐌𝐂𝐀𝐒 𝐖𝐨𝐫𝐥𝐝 𝐂𝐨𝐧𝐠𝐫𝐞𝐬𝐬 𝟐𝟎𝟐𝟔, l’un des événements scientifiques les plus prestigieux en dermatologie et médecine esthétique, qui se tiendra à 𝐏𝐚𝐫𝐢𝐬 𝐝𝐮 𝟑𝟎 𝐣𝐚𝐧𝐯𝐢𝐞𝐫 𝐚𝐮 𝟏𝐞𝐫 𝐟𝐞́𝐯𝐫𝐢𝐞𝐫 𝟐𝟎𝟐𝟔.

🎤 𝐌𝐚 𝐩𝐫𝐞́𝐬𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧 :
𝑈𝑛𝑑𝑒𝑟𝑠𝑡𝑎𝑛𝑑𝑖𝑛𝑔 ℎ𝑦𝑝𝑒𝑟𝑝𝑖𝑔𝑚𝑒𝑛𝑡𝑎𝑡𝑖𝑜𝑛 𝑖𝑛 𝑑𝑎𝑟𝑘 𝑠𝑘𝑖𝑛: 𝑐𝑙𝑖𝑛𝑖𝑐𝑎𝑙 𝑟𝑒𝑎𝑙𝑖𝑡𝑖𝑒𝑠 𝑎𝑛𝑑 𝑔𝑙𝑜𝑏𝑎𝑙 𝑝𝑒𝑟𝑠𝑝𝑒𝑐𝑡𝑖𝑣𝑒𝑠
🗓️ 𝐕𝐞𝐧𝐝𝐫𝐞𝐝𝐢 𝟑𝟎 𝐣𝐚𝐧𝐯𝐢𝐞𝐫 𝟐𝟎𝟐𝟔 – 𝟏𝟏𝐡𝟒𝟐 𝐚̀ 𝟏𝟏𝐡𝟓𝟒
📌 𝐒𝐚𝐥𝐥𝐞 𝐌𝐚𝐢𝐥𝐥𝐨𝐭 – 𝐍𝐢𝐯𝐞𝐚𝐮 𝟐

Cette session internationale réunira des experts de divers pays pour discuter :
✔️ des troubles de la pigmentation selon les phototypes,
✔️ des traitements innovants,
✔️ des spécificités cliniques des peaux foncées,
✔️ et des perspectives mondiales sur la dermatologie inclusive.

Organisée en collaboration avec International Society of Dermatology (ISD) et le Worldwide Dermatology Collaboration Society (WDC), cette session offre une plateforme unique pour partager expériences et expertises.

C’est un privilège de contribuer à ce dialogue scientifique mondial. 🌍✨
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16/11/2025

🌟 𝐄𝐱𝐜𝐢𝐭𝐢𝐧𝐠 𝐀𝐧𝐧𝐨𝐮𝐧𝐜𝐞𝐦𝐞𝐧𝐭 – 𝐖𝐃𝐂 𝐒𝐮𝐦𝐦𝐢𝐭 𝟐𝟎𝟐𝟔, 𝐂𝐥𝐮𝐬𝐨𝐧𝐞! 🌟

We are honored to welcome Prof. Nellie Konnikov, Immediate Past President of the International Society of Dermatology (ISD), to the Scientific Program of the WDC Summit 2026! 🙌

🔹 𝐎𝐩𝐞𝐧𝐢𝐧𝐠 𝐭𝐡𝐞 𝐒𝐮𝐦𝐦𝐢𝐭:
Prof. Konnikov will deliver the 𝐈𝐧𝐚𝐮𝐠𝐮𝐫𝐚𝐥 𝐑𝐞𝐦𝐚𝐫𝐤𝐬 during the Opening Ceremony on 𝐌𝐚𝐲 𝟏𝟓, 𝟐𝟎𝟐𝟔, setting the tone for this landmark event.

🔹 𝐏𝐥𝐞𝐧𝐚𝐫𝐲 𝐋𝐞𝐜𝐭𝐮𝐫𝐞:
Don’t miss her lecture titled
🗣️ Overcoming Challenges in Diagnosis and Management of Rosacea in Ethnic Skin
📅 𝐒𝐚𝐭𝐮𝐫𝐝𝐚𝐲, 𝐌𝐚𝐲 𝟏𝟔 – 𝟏𝟎:𝟑𝟎 𝐀𝐌
📍 Hall 1 – Teatro di Clusone

🔹 𝐌𝐨𝐝𝐞𝐫𝐚𝐭𝐨𝐫 𝐑𝐨𝐥𝐞:
She will also serve as a moderator for key plenary sessions throughout the Summit.

Join us in welcoming Prof. Konnikov, and stay tuned for more updates!
🔗 Official website: www.wdc-clusone2026.it

13/11/2025

𝐀𝐧𝐧𝐨𝐮𝐧𝐜𝐞𝐦𝐞𝐧𝐭 – 𝐖𝐨𝐫𝐥𝐝𝐰𝐢𝐝𝐞 𝐃𝐞𝐫𝐦𝐚𝐭𝐨𝐥𝐨𝐠𝐲 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧 𝐉𝐨𝐮𝐫𝐧𝐚𝐥

The 𝑊𝑜𝑟𝑙𝑑𝑤𝑖𝑑𝑒 𝐷𝑒𝑟𝑚𝑎𝑡𝑜𝑙𝑜𝑔𝑦 𝐶𝑜𝑙𝑙𝑎𝑏𝑜𝑟𝑎𝑡𝑖𝑜𝑛 𝐽𝑜𝑢𝑟𝑛𝑎𝑙 (𝑊𝐷𝐶 𝐽𝑜𝑢𝑟𝑛𝑎𝑙) is proud to announce that 𝐏𝐫𝐨𝐟. 𝐔𝐰𝐞 𝐖𝐨𝐥𝐥𝐢𝐧𝐚 has joined our editorial team as 𝐒𝐞𝐧𝐢𝐨𝐫 𝐒𝐜𝐢𝐞𝐧𝐭𝐢𝐟𝐢𝐜 𝐀𝐝𝐯𝐢𝐬𝐨𝐫.

Prof. Wollina is an internationally renowned dermatologist, researcher, and editor who has served as Editor-in-Chief and reviewer for several high-impact journals. His expertise will significantly contribute to strengthening the scientific rigor, visibility, and global impact of our journal.

We warmly welcome Prof. Wollina to the WDC family and look forward to an exciting new chapter of excellence and collaboration in dermatological research.

🔗 https://scientificeditorial.com/index.php/wdc-journal

13/11/2025

🌍 𝐖𝐃𝐂 𝐒𝐔𝐌𝐌𝐈𝐓 𝟐𝟎𝟐𝟔 – 𝐂𝐋𝐔𝐒𝐎𝐍𝐄 (𝐁𝐄𝐑𝐆𝐀𝐌𝐎, 𝐈𝐓𝐀𝐋𝐘)

📅 𝑀𝑎𝑦 15–17, 2026
📍 𝑇𝑒𝑎𝑡𝑟𝑜 𝑑𝑖 𝐶𝑙𝑢𝑠𝑜𝑛𝑒 & 𝑉𝑖𝑙𝑙𝑎 𝐹𝑜𝑔𝑎𝑐𝑐𝑖𝑎

Under the auspices of 𝐏𝐫𝐢𝐬𝐜𝐚 𝐒𝐚𝐩𝐢𝐞𝐧𝐭𝐢𝐚 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐢𝐭𝐲 (𝐒𝐰𝐢𝐭𝐳𝐞𝐫𝐥𝐚𝐧𝐝), 𝐖𝐨𝐫𝐥𝐝 𝐇𝐞𝐚𝐥𝐭𝐡 𝐀𝐜𝐚𝐝𝐞𝐦𝐲 (𝐔𝐒𝐀) & 𝐈𝐬𝐭𝐢𝐭𝐮𝐭𝐨 𝐒𝐮𝐩𝐞𝐫𝐢𝐨𝐫𝐞 𝐝𝐢 𝐌𝐞𝐝𝐢𝐜𝐢𝐧𝐚 (𝐈𝐭𝐚𝐥𝐲)
🔗 www.wdc-clusone2026.it

🎓 𝐒𝐏𝐄𝐂𝐈𝐀𝐋 𝐅𝐄𝐀𝐓𝐔𝐑𝐄𝐒

🎤 𝑃𝑙𝑒𝑛𝑎𝑟𝑖𝑒𝑠: Brigitte Dréno · Somesh Gupta · Patrick Treacy · Uwe Wollina · Sharad Paul · Archana Singal

🧪 𝑊𝑜𝑟𝑘𝑠ℎ𝑜𝑝𝑠: Exosome-Based Cosmetology · Essential Digital Tools

🌐 𝑆𝑖𝑠𝑡𝑒𝑟 𝑆𝑜𝑐𝑖𝑒𝑡𝑖𝑒𝑠: CDSI (India) · EWDS (Egypt)

🌱 𝑌𝑜𝑢𝑛𝑔 𝐼𝑛𝑣𝑒𝑠𝑡𝑖𝑔𝑎𝑡𝑜𝑟 𝐻𝑖𝑔ℎ𝑙𝑖𝑔ℎ𝑡𝑠 in every session

✨ Join us in Clusone, where innovation meets collaboration in global dermatology!

12/11/2025

🌍 𝐖𝐃𝐂 𝐒𝐮𝐦𝐦𝐢𝐭 𝟐𝟎𝟐𝟔 – 𝐂𝐥𝐮𝐬𝐨𝐧𝐞 (𝐈𝐭𝐚𝐥𝐲)

We are delighted to announce that 𝐏𝐫𝐨𝐟. 𝐔𝐰𝐞 𝐖𝐨𝐥𝐥𝐢𝐧𝐚 (𝐆𝐞𝐫𝐦𝐚𝐧𝐲), Co-President of the WDC Summit 2026, will deliver a
𝐏𝐥𝐞𝐧𝐚𝐫𝐲 𝐋𝐞𝐜𝐭𝐮𝐫𝐞 on
𝐿𝑖𝑝𝑒𝑑𝑒𝑚𝑎 – 𝐹𝑟𝑜𝑚 𝑃𝑟𝑒ℎ𝑖𝑠𝑡𝑜𝑟𝑖𝑐 𝑇𝑖𝑚𝑒𝑠 𝑡𝑜 𝐶𝑜𝑚𝑝𝑙𝑒𝑥 𝑇𝑟𝑒𝑎𝑡𝑚𝑒𝑛𝑡𝑠”
and a 𝐒𝐜𝐢𝐞𝐧𝐭𝐢𝐟𝐢𝐜 𝐋𝐞𝐜𝐭𝐮𝐫𝐞 on
𝐶𝑢𝑟𝑟𝑒𝑛𝑡 𝐶𝑜𝑛𝑐𝑒𝑝𝑡𝑠 𝑖𝑛 𝑆𝑢𝑝𝑝𝑢𝑟𝑎𝑡𝑖𝑣𝑒 𝐻𝑖𝑑𝑟𝑎𝑑𝑒𝑛𝑖𝑡𝑖𝑠 (𝐼𝑛𝑣𝑒𝑟𝑠𝑒 𝐴𝑐𝑛𝑒).

We are deeply honored by his participation and look forward to welcoming him in Clusone next May.

🔹

10/11/2025

✅ Réponse : D. Mélasma diffus

Pourquoi ?
Hyperpigmentation brun-grisâtre symétrique du visage (y compris le front).
En dermoscopie : fond brun homogène, follicules visibles, pas de points bleus-gris → exclut l’ochronose.

👉🏽 Diagnostic : Mélasma diffus sur peau foncée, et non une mélanodermie syphilitique.

09/11/2025

🌍 𝐖𝐃𝐂 𝐒𝐮𝐦𝐦𝐢𝐭 𝟐𝟎𝟐𝟔 – 𝐂𝐥𝐮𝐬𝐨𝐧𝐞 (𝐈𝐭𝐚𝐥𝐲)
📅 𝑀𝑎𝑦 15–17, 2026 | 𝑇𝑒𝑎𝑡𝑟𝑜 𝑑𝑖 𝐶𝑙𝑢𝑠𝑜𝑛𝑒 & 𝑉𝑖𝑙𝑙𝑎 𝐹𝑜𝑔𝑎𝑐𝑐𝑖𝑎

✨ The 𝐒𝐜𝐢𝐞𝐧𝐭𝐢𝐟𝐢𝐜 𝐏𝐫𝐨𝐠𝐫𝐚𝐦 of the Worldwide Dermatology Collaboration (WDC) Summit 2026 is now 𝐟𝐢𝐧𝐚𝐥𝐢𝐳𝐞𝐝 𝐚𝐧𝐝 𝐮𝐧𝐝𝐞𝐫 𝐟𝐢𝐧𝐚𝐥 𝐫𝐞𝐯𝐢𝐞𝐰!
Featuring world experts in 𝐫𝐞𝐠𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐯𝐞 𝐝𝐞𝐫𝐦𝐚𝐭𝐨𝐥𝐨𝐠𝐲, 𝐀𝐈, 𝐠𝐥𝐨𝐛𝐚𝐥 𝐬𝐤𝐢𝐧 𝐡𝐞𝐚𝐥𝐭𝐡, 𝐢𝐦𝐦𝐮𝐧𝐨𝐝𝐞𝐫𝐦𝐚𝐭𝐨𝐥𝐨𝐠𝐲, 𝐚𝐧𝐝 𝐭𝐫𝐨𝐩𝐢𝐜𝐚𝐥 𝐝𝐢𝐬𝐞𝐚𝐬𝐞𝐬, the Summit will highlight innovation, diversity, and translational excellence.

🧠 Key themes include:
• Regeneration and Exosomes
• Artificial Intelligence in Dermatology
• Immunopathogenesis and Targeted Therapies
• Global Health and Neglected Tropical Diseases
• Psychodermatology and the Mind–Skin Connection

📘 The final program will be published on November 10 and shared with all confirmed speakers and on the official website:
🌐 www.wdc-clusone2026.it

Stay tuned for an inspiring gathering that bridges science, innovation, and collaboration worldwide! 🌐💫

World-renowned dermatologists, researchers, and policymakers from over 40 countries will gather to present cutting-edge research and future perspectives in dermatology.

08/11/2025

🇬🇧 𝐂𝐥𝐢𝐧𝐢𝐜𝐚𝐥 𝐜𝐚𝐬𝐞:

Male patient with 𝐝𝐢𝐟𝐟𝐮𝐬𝐞 𝐛𝐫𝐨𝐰𝐧-𝐠𝐫𝐚𝐲 𝐟𝐚𝐜𝐢𝐚𝐥 𝐡𝐲𝐩𝐞𝐫𝐩𝐢𝐠𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧 (forehead, cheeks, chin).
𝐃𝐞𝐫𝐦𝐨𝐬𝐜𝐨𝐩𝐲 shows a 𝐡𝐨𝐦𝐨𝐠𝐞𝐧𝐞𝐨𝐮𝐬 𝐛𝐫𝐨𝐰𝐧 𝐛𝐚𝐜𝐤𝐠𝐫𝐨𝐮𝐧𝐝 with 𝐯𝐢𝐬𝐢𝐛𝐥𝐞 𝐟𝐨𝐥𝐥𝐢𝐜𝐮𝐥𝐚𝐫 𝐨𝐩𝐞𝐧𝐢𝐧𝐠𝐬 𝐚𝐧𝐝 𝐧𝐨 𝐛𝐥𝐮𝐞-𝐠𝐫𝐚𝐲 𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞𝐬.
𝐒𝐲𝐩𝐡𝐢𝐥𝐢𝐬 𝐬𝐞𝐫𝐨𝐥𝐨𝐠𝐲 is positive.
---
❓ 𝐖𝐡𝐚𝐭 𝐢𝐬 𝐭𝐡𝐞 𝐦𝐨𝐬𝐭 𝐥𝐢𝐤𝐞𝐥𝐲 𝐝𝐢𝐚𝐠𝐧𝐨𝐬𝐢𝐬?

A. Syphilitic melanoderma
B. Exogenous ochronosis
C. Post-inflammatory melanosis
D. Diffuse melasma
---
📍 – Educational Quiz Series
🔁 Share to promote dermoscopy knowledge on dark skin.

08/11/2025

🇫🇷 𝐂𝐚𝐬 𝐜𝐥𝐢𝐧𝐢𝐪𝐮𝐞 :

Homme présentant une 𝐡𝐲𝐩𝐞𝐫𝐩𝐢𝐠𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧 𝐛𝐫𝐮𝐧-𝐠𝐫𝐢𝐬𝐚̂𝐭𝐫𝐞 𝐝𝐢𝐟𝐟𝐮𝐬𝐞 𝐝𝐮 𝐯𝐢𝐬𝐚𝐠𝐞 (front, joues, menton).
Les 𝐢𝐦𝐚𝐠𝐞𝐬 𝐝𝐞𝐫𝐦𝐨𝐬𝐜𝐨𝐩𝐢𝐪𝐮𝐞𝐬 montrent un 𝐟𝐨𝐧𝐝 𝐛𝐫𝐮𝐧 𝐡𝐨𝐦𝐨𝐠𝐞̀𝐧𝐞 avec 𝐨𝐮𝐯𝐞𝐫𝐭𝐮𝐫𝐞𝐬 𝐟𝐨𝐥𝐥𝐢𝐜𝐮𝐥𝐚𝐢𝐫𝐞𝐬 𝐯𝐢𝐬𝐢𝐛𝐥𝐞𝐬, 𝐬𝐚𝐧𝐬 𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞𝐬 𝐛𝐥𝐞𝐮-𝐠𝐫𝐢𝐬.
La 𝐬𝐞́𝐫𝐨𝐥𝐨𝐠𝐢𝐞 𝐬𝐲𝐩𝐡𝐢𝐥𝐢𝐭𝐢𝐪𝐮𝐞 est positive.
---
❓ 𝐐𝐮𝐞𝐥 𝐞𝐬𝐭 𝐥𝐞 𝐝𝐢𝐚𝐠𝐧𝐨𝐬𝐭𝐢𝐜 𝐥𝐞 𝐩𝐥𝐮𝐬 𝐩𝐫𝐨𝐛𝐚𝐛𝐥𝐞 ?

A. Mélanodermie syphilitique
B. Ochronose exogène
C. Mélanose post-inflammatoire
D. Mélasma diffus

📍 – Educational Quiz Series

01/11/2025

🌞 𝐖𝐡𝐲 𝐢𝐬 𝐕𝐢𝐭𝐚𝐦𝐢𝐧 𝐃 𝐝𝐞𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲 𝐦𝐨𝐫𝐞 𝐜𝐨𝐦𝐦𝐨𝐧 𝐢𝐧 𝐝𝐚𝐫𝐤 𝐬𝐤𝐢𝐧? 🧬

𝐕𝐢𝐭𝐚𝐦𝐢𝐧 𝐃 is unique — 𝐢𝐭’𝐬 𝐭𝐡𝐞 𝐨𝐧𝐥𝐲 𝐯𝐢𝐭𝐚𝐦𝐢𝐧 𝐭𝐡𝐞 𝐡𝐮𝐦𝐚𝐧 𝐛𝐨𝐝𝐲 𝐜𝐚𝐧 𝐩𝐫𝐨𝐝𝐮𝐜𝐞 𝐨𝐧 𝐢𝐭𝐬 𝐨𝐰𝐧, from cholesterol, when the skin is exposed to 𝐔𝐕𝐁 𝐫𝐚𝐲𝐬 from sunlight.

But this natural synthesis depends on the 𝐚𝐦𝐨𝐮𝐧𝐭 𝐚𝐧𝐝 𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 𝐨𝐟 𝐦𝐞𝐥𝐚𝐧𝐢𝐧 in the skin.
The number of 𝐦𝐞𝐥𝐚𝐧𝐨𝐜𝐲𝐭𝐞𝐬 (cells that produce melanin) is roughly the same for everyone.
👉 What differs is the size and distribution of melanosomes, the tiny structures that store melanin.

🔹 In dark skin: melanosomes are 𝐥𝐚𝐫𝐠𝐞𝐫, 𝐦𝐨𝐫𝐞 𝐧𝐮𝐦𝐞𝐫𝐨𝐮𝐬, 𝐚𝐧𝐝 𝐦𝐨𝐫𝐞 𝐞𝐯𝐞𝐧𝐥𝐲 𝐝𝐢𝐬𝐭𝐫𝐢𝐛𝐮𝐭𝐞𝐝, offering a 𝐬𝐭𝐫𝐨𝐧𝐠𝐞𝐫 𝐧𝐚𝐭𝐮𝐫𝐚𝐥 𝐩𝐫𝐨𝐭𝐞𝐜𝐭𝐢𝐨𝐧 against UV rays.
🔹 However, this protection also 𝐫𝐞𝐝𝐮𝐜𝐞𝐬 𝐔𝐕𝐁 𝐩𝐞𝐧𝐞𝐭𝐫𝐚𝐭𝐢𝐨𝐧, which means 𝐥𝐞𝐬𝐬 𝐕𝐢𝐭𝐚𝐦𝐢𝐧 𝐃 𝐢𝐬 𝐩𝐫𝐨𝐝𝐮𝐜𝐞𝐝.

➡️ As a result, under equal sun exposure, 𝐝𝐚𝐫𝐤 𝐬𝐤𝐢𝐧 𝐩𝐫𝐨𝐝𝐮𝐜𝐞𝐬 𝐥𝐞𝐬𝐬 𝐕𝐢𝐭𝐚𝐦𝐢𝐧 𝐃 than light skin.
This is not a disadvantage — it’s an 𝐞𝐯𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐚𝐫𝐲 𝐚𝐝𝐚𝐩𝐭𝐚𝐭𝐢𝐨𝐧 to intense sunlight in tropical regions.

In areas with limited sunlight, however, this adaptation can increase the risk of 𝐕𝐢𝐭𝐚𝐦𝐢𝐧 𝐃 𝐝𝐞𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲, highlighting the need for 𝐦𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠 𝐚𝐧𝐝 𝐚𝐩𝐩𝐫𝐨𝐩𝐫𝐢𝐚𝐭𝐞 𝐬𝐮𝐩𝐩𝐥𝐞𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧.