Ulcer?

I was lying on my bed and enjoying the tv program, Little Arielle started wailing. She pointed to her lips and kept saying that it's painful. I proceeded to check her entire mouth and realised that she got an ulcer on her upper right lip.

I was quite surprised cos it din occur to me that kids as young as 2 can have ulcer. Told mama to brew barley for her and she gotta abstain from heaty food (which I doubt so).

If not, then it will take a longer time to recover!