High stress levels and poor sleep can weaken your immune response, making you more prone to ulcers.

Gently holding an ice cube against the sore can numb the pain before a meal.

We’ve all been there: that tiny, white, searingly painful spot in your mouth that makes every sip of coffee feel like a direct attack. Known medically as aphthous ulcers (or "aphtes" in French), these are more than just a nuisance—they’re a sign your body is reacting to stress, trauma, or a nutritional gap. Here’s what you need to know to find relief fast.

Avoid products containing Sodium Lauryl Sulfate (SLS) , a foaming agent that can irritate sensitive mouth tissue.

Canker sores are a literal pain, but they’re usually a temporary signal from your body to slow down and stay hydrated. By managing your stress and keeping a few home remedies in your toolkit, you can get back to eating and speaking without the sting.

Typically round or oval with a white or yellow center and a red, inflamed border.