canker sore

• Úlcera o lesión pequeña y dolorosa que aparece dentro de la boca, en la lengua o en la parte interna de los labios, a menudo causada por estrés, traumatismo o ciertos alimentos.

A small, painful ulcer or lesion that appears inside the mouth, on the tongue, or on the inner lips, often caused by stress, injury, or certain foods.

1. Small mouth ulcerB1formal

   A small, painful ulcer that appears inside the mouth, on the tongue, or on the inner lips, often caused by stress, injury, or certain foods.

   Úlcera bucal aftosa

   • I got a canker sore after eating too much citrus fruit.
   • The dentist recommended a special gel to heal the canker sore.
   • Stress often triggers a canker sore for her.