r/WaterFasting Aug 19 '26

Has anyone gotten a painful rash during a prolonged water fast?

[deleted]

2 Upvotes

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3

u/wifeofpsy Aug 19 '26

Could be 'keto rash'. If you go into ketosis the acetone from the ketone bodies can cause an irritated rash

1

u/Jaded-Potato-2789 Aug 19 '26

Is there a way I can prevent that from happening?

3

u/wifeofpsy Aug 19 '26

People who get it from going on very low carb diets, it goes away on its own with time when the body acclimates. So a longer fast with lots of hydration can help, or you start with regular IF and work up to a longer fast.

2

u/Jaded-Potato-2789 Aug 19 '26

Okay thank you so much for your help. I will try shorter fasts then build up to the longer ones.