How am I cutting my lip?

Not asking for medical advice here, just seeing if there is something that could be causing this. If it gets any worse I will be seeing my doctor.

With that out of the way, about a week ago I noticed two scars forming on the inside of my lip. They are both roughly an inch or so long, right above the mandibular canines. I’m thinking I must be cutting my lip on my canines but also wondering if there could be another explanation.

Biting your lips at night?

[QUOTE=Fetchund]
Biting your lips at night?
[/QUOTE]

Must be something like that, but it just surprises me since it hasn’t happened before. I guess I’m wondering if there is anything that would cause someone to start doing that.