The ketogenic diet can be tough — cutting carbs is difficult enough, and then there are the side effects. While you’re on your way to achieving whatever goals you’ve set for yourself, you may develop prurigo pigmentosa, commonly referred to by diet enthusiasts as “keto rash.”
“Prurigo pigmentosa was first described in 1971 and is a fairly rare disorder, especially in the United States,” Dr. Sarah Beth Corley, MD, MS, FAAD, an assistant professor of dermatology at the University of North Carolina at Chapel Hill, told POPSUGAR. “Although it may be that it is either undiagnosed or misdiagnosed due to lack of awareness of the condition in the Western hemisphere.”
What Causes Prurigo Pigmentosa?
While the cause of the disease remains unclear, it has been linked with ketosis. “Ketosis associated with dieting or fasting has been thought to play a role in the etiology of prurigo pigmentosa by some authors,” Dr. Corley said. “While these reports seem supportive of the hypothesis that the two are related, overall most patients with the disease have no association with ketosis.”