Are Mouth ulcers contagious?

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Are Mouth ulcers contagious?

To this day, no scientific study has shown that mouth ulcers are contagious. On the contrary, cold sores, located generally outside the mouth, can be very infectious.

See also:

Mouth ulcers causes
Mouth ulcers and cold sores: is it the same thing?
I often have mouth ulcers, what should I do?

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Many women have mouth ulcers in the days before their menstrual cycle

Tip of the day:

Do not use extensively mouthwashes or local antiseptics which could destabilize your oral flora