Latest Posts

A Reader’s Experience Treating Keto Rash with Doxycycline

In the comments section of the BJJ Caveman keto rash page a reader named John wrote:

I had no reoccurrence of the rash after taking Doxycycline for 11 days without any change in my diet 9 months ago (see above and be aware of rare but possible severe side effects affecting mood). In order to avoid antibiotic-associated diarrhea I took Saccharomyces boulardii together with the antibiotic.

I now do intermittent fasting daily throughout the work-week without any problems. My longest fast was 36 hours.

Maybe Doxycycline wipes out certain types of gut bacteria that can proliferate extremely well under the conditions of ketosis, but not otherwise and produce a substance that causes the rash.

Read More

Dave Asprey’s Take on the Keto Rash

blog-148-2-300x300Dave Asprey, the Bulletproof Executive briefly discussed his thoughts on the keto rash in his most recent Q&A session.

Before going into this, I want to first thank Jasmine from jasminesvision.com for alerting me to this a few weeks ago.

Beginning at the 41:50 mark they address the question of:

“What are your thoughts on Keto rash and it’s causes or processes. It’s not everyone, so why some and not the others. Is that genetic? And is the only cure carb consumption. It would seem as though waiting it out as if it were a detoxing mechanism is risky, as it can cause scarring.”

You can listen to the full podcast here. … Read More

The Keto Rash in 2 American Women

Keto Rash in 2 American Women

Keto Rash in 2 American Women2Here are two American women that developed the keto rash.

Prurigo Pigmentosa: Report of two cases in the United States and review of the literature

Published in the Dermatology Online Journal December 2011

I actually really feel terrible for the first patient because she had this rash off and on for 2 years and underwent multiple skin biopsies… which led to her being misdiagnosed with herpes simplex virus for which she was treated unsuccessfully with anti-viral medications (oral acyclovir, valcyclovir, and topical acyclovir) as well as topical corticosteroids with no improvement.… Read More

The Keto Rash in 50 Koreans – The Most Comprehensive Study Yet!

PP 50 koreans 2This is a great paper with one of the largest series of keto rash cases assembled to date.  They also do a wonderful job going into the history of the rash, and is probably the most comprehensive paper available.  Let’s dive in!

Prurigo pigmentosa: Clinicopathological study and analysis of 50 cases in Korea

Published in 2012, in the Journal of Dermatology

They report that this rash was first described in Japan, in 1971 (can’t wait to look at this paper), with more than 300 cases reported at the time of this papers publication.… Read More

The Keto Rash and H. Pylori

PP-H-PyloriNOTE: A version of this was originally published on bjjcaveman.com (here) on September 5, 2014.

This was another paper that caught my attention because of the title which identified a specific organism in the skin biopsy of the prurigo pigmentosa rash.

Identification of Helicobacter pylori in Skin Biopsy of Prurigo Pigmentosa

This was published in the American Journal of Dermatopathology on June of 2012.

This was a 23 year old Chinese man with a history of rash for 3 years.

They performed a skin biopsy from which they were able to isolate the Helicobacter pylori organism. … Read More

The Keto Rash and Lyme Disease

PP-BorreliaNOTE: A version of this was originally published on bjjcaveman.com (here) on August 31, 2014

I was very excited by the title of this article, especially since it offered potential insight as to a specific infectious etiology to this rash!

Molecular detection and genetic identification of Borrelia garinii and Borrelia afzelii from patients presenting with a rare skin manifestation of prurigo pigmentosa in Taiwan

This was published in the International Journal of Infectious Diseases, August 2013.  This is a free article, so please feel free to read the whole thing yourself from the link provided.… Read More

The Keto Rash after a Strict Ketogenic Diet

PP-ketogenic-diet

NOTE: A version of this was originally published on bjjcaveman.com (here) on August 28, 2014

This one had a very promising title and was in Pediatric Dermatology on December 30, 2013.

Prurigo Pigmentosa after a Strict Ketogenic Diet

This was a single case report about a 17 year old white boy who presented with this rash on his chest, upper back, and abdomen for 2 weeks.  He also had pain in his knees, wrists, elbows and ankles.

Because of his joint pains, he was initially diagnosed with dermatomyositis and was treated with IV corticosteroids (methylprednisolone). … Read More

Segmental Appearance of the Keto Rash

Segmental-PP-536x1024NOTE: This was originally published on bjjcaveman.com (here) on August 26, 2014

This next article is also hot off the presses, published July/August 2014 in Pediatric Dermatology.

Segmental Prurigo Pigmentosa

This was simply a case report about a 13 year old girl (pictured above) who developed the rash.  Unfortunately they do not discuss what they think caused it.

They thought this was worthy of report primarily because of the distribution of the rash which they call “segmental,” describing how it appears almost as a band on the left side of her chest.… Read More

The Keto Rash in the Middle East

PP-Middle-East-686x1024NOTE: This was originally published on bjjcaveman.com (here) on August 26, 2014.

Prurigo Pigmentosa: A Clinicopathologic Study of 4 Cases from the Middle East

This was the first case series from the Middle East, out of the American University of Beirut Medical Center, Lebanon.  This article is hot off the presses, just published in the American Journal of Dermatology on July 30, 2014.

SUBJECTS:

  • All 4 patients were female with a mean age of 23.5
  • 3 of the 4 had a history of prior episodes
  • One patient reported an association with the rash and with Ramadan fasting.
Read More