A reaction to a ketogenic diet can be a "keto rash"...it doesn't sound like that is what you have, but check this article if it might be similar: https://www.dietdoctor.com/keto-ras...e-itch-low-carb and If only when in bed...think new detergent?, softener? change in mattress pad or other bedding?, reasons not at all food related? etc.

You can create a new allergy with most any food if you overeat them enough. A friend of mine was eating too many eggs for her, and ended up with a weird tightness in her chest. She eliminated them for a month and then re-introduced 1-2 week, then see how you do.

Don’t eat anything you don't like! (thanks to Dr. Sarah Hallberg for that line). If lettuce is all you like, so be it...but have you tried roasting vegetables in bacon fat or olive oil? Good fats and Roasting make them sweet. Or Look for new recipes with the foods you DO like. Filter by carb level and what you like: https://www.dietdoctor.com/low-carb/recipes If you really like meat, check out our Zero Carb thread. https://forum.lowcarber.org/showthread.php?t=471960 The Carnivore Diet is very popular right now and that might be an easy elimination diet for you to try to figure out the reason for the hives.
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