Keto rash, also known as prurigo pigmentosa, is an inflammatory condition characterized by red, itchy skin mostly in the neck area. The keto rash is a type of dermatitis that can affect anyone but it is most common in people in Asia, especially Asian women.
The rash following a keto diet is not a sign that the diet itself is wrong or harmful. It’s just an unusual reaction to ketosis—a state that the body enters after a while of following a ketogenic diet plan. The keto rash is not really limited to the diet either. It happens to people on vegetarian and vegan diets as well.
One of the reasons for keto breakouts is the fact that a keto diet is a high-fat diet, which can increase the production of sebum. The rash will go away when the body adapts to the new food regimen, but there are a few things you can try such as supplement your diet with vitamins and omega 3, eliminate allergens, and increase your carb intake.