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A canker sore may be small, but it dominates your mouth, mood, and meals. Drinking water hurts. Smiling hurts. Existing near food hurts.
A canker sore is a small ulcer inside the mouth caused by irritation or immune overreaction. Once inflamed, it sits directly on exposed nerves.
Your mouth is packed with nerve endings. Even a tiny ulcer triggers constant nerve signals — which is why it feels wildly unfair.
Canker sores heal, even if the days feel endless. Be gentle, eat soft, rest your mouth, and remember — this tiny villain does leave eventually.
Share experiences, coping tips, and solidarity with people who know exactly how a tiny mouth sore can ruin a week.
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