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Pruritic rash on chest and back

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Was a recent change in diet to blame for this patient’s rash?


 

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A 26-year-old woman presented to our clinic with pruritic, hyperpigmented, symmetric edematous plaques on her upper flank, chest, and lower back (FIGURE) 3 weeks after starting a strict ketogenic (high fat/low carbohydrate) diet for postpartum weight loss. The patient was an otherwise healthy stay-at-home mother with an unremarkable medical history.

Edematous, reticulated rash on upper flank and back

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