Ketogenic diet rash especially itchy and swollen is usually a ketone rash, which is a pigmented itchy rash. In this case, it is recommended to stop the ketogenic diet in time, resume the daily diet, pay attention to nutrition. The ketogenic diet is a weight loss diet with a high percentage of fat and a dietary pattern that strictly restricts carbohydrates. And some people get rashes, itchy and swollen all over their body while using this diet. This condition is called keto rash. Keto rash is a rare, unexplained inflammatory skin condition that goes by the scientific name of pigmented itchy rash. This condition requires prompt cessation of the ketogenic diet, a return to a normal diet, balanced nutrition, and prompt medical attention.