Skin diseases A-Z Skin diseases D – G Erythromelanosis interfollicularis colli January 21, 2025 / August 12, 2026 by Dick van Gerwen | Leave a Comment What is Erythromelanosis interfollicularis? Erythromelanosis (synonym: poikiloderma of Civatte) is a reddish-brown discoloration on both sides of the neck. It typically occurs after the age of 30. The discoloration can extend to the chest and cheeks. Only individuals with fair skin are affected. What is the cause? Poikiloderma is caused by sun exposure. The skin […] Read more » Erythromelanosis interfollicularis colli poikiloderma of civatte