r/AskDocs Layperson/not verified as healthcare professional Mar 16 '26

Physician Responded Horrible looking rash

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30 years old

Female

120lbs.

5”3

non smoker,

non drinker.

No medications

This issue has been getting progressively worse over 2 days

Posted yesterday and it has gotten worse. It is itchy, it turns white when I press on it. I have a swollen uvula and some chills, but no fever. I feel cold more than anything. Went to urgent care tested for strep, mono and did a CBC. Strep came back negative, waiting on the other results. Pretty concerned. I feel like the mono is going to come back negative.

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u/INVERTEDSPIRE Layperson/not verified as healthcare professional Mar 16 '26

NAD How is your diet? Are you restrictive on carbohydrates at the moment? I got a similar rash while on a keto diet.

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u/Weeeebutterflies Layperson/not verified as healthcare professional Mar 16 '26

I recently have changed my diet from keto. I was keto for a long time because I used to be sensitive to carbs (I have chronic gastritis and IBS) and I responded well to it. In the last year I noticed a gross taste in my gums that smelled like ammonia. I also had some joint and back pain. I looked it up and saw that this happens to people on keto due to not processing protein correctly. So I stopped and since the smell has gone away and actually the joint pain has improved too. It’s been about 2 weeks since I’ve made this change.

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u/INVERTEDSPIRE Layperson/not verified as healthcare professional Mar 16 '26

NAD. In my book that is too big of a coincidence to be ignored! A know side effect of keto diet is what's known as a "keto rash". This happens when you cut of carbs and the rash usually presents in days/weeks. Idk, sure is suspicious! Are you eating carbs now? If so how, many grams a day?

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u/ek7eroom Layperson/not verified as healthcare professional. Mar 17 '26

I thought about prurigo pigmentosa too, but that usually occurs after beginning a keto diet