This is Dr. David
a peeling tongue is not a sign of stomach cancer.
but it can be a sign of bad stomach acid reflux or a tongue fungal infection like thrush.
if she drank something very hot in her mouth yesterday like hot coffee or soup, this can cause peeling skin on her tongue today
she needs to see a doctor to get her mouth evaluated.
but I would not worry about stomach cancer.
did she drink something very hot?
let me know if you have other questions.
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