Symptom Breakdown
What you feel
A small, shallow, extremely tender lesion on the inside of your lips, cheeks, or at the base of your gums. It typically has a white or yellowish center with a bright red, inflamed border. Eating acidic, spicy, or salty foods causes a severe, stinging pain.
Why it happens
Commonly known as aphthous ulcers, these sores can be triggered by accidental cheek bites, stress, hormonal shifts, acidic foods (like citrus or tomatoes), or vitamin deficiencies (B-12, iron, folate). Unlike cold sores, canker sores are not contagious and do not occur on the outside of the lips.
Clinical Advice
- Avoid toothpastes containing Sodium Lauryl Sulfate (SLS). This foaming agent is a known irritant that can trigger or worsen mouth ulcers in sensitive individuals.
- Stick to soft, bland foods and rinse gently with warm salt water to help neutralize the acidic environment.
- If an ulcer does not heal within two to three weeks, or if it is completely painless, it requires immediate clinical evaluation to rule out oral cancer.
Treatment Note
Prescription topical anesthetics (gels), antimicrobial mouth rinses, localized dental laser therapy to instantly seal the nerve endings, or addressing systemic vitamin deficiencies.