A weird, itchy rash is linked to the keto diet—but no one knows why
Summary
The Ars Technica piece covers a case where a ketogenic diet coincided with a mysterious itchy rash identified as keto rash (prurigo pigmentosa). It explains the possible ketosis-related mechanism, cites a NEJM case report and a recent review, and notes treatment options including stopping ketosis and doxycycline.