YANMD: Cold sore, zit, canker sore, angular cheilitis?
September 16, 2019 10:21 AM Subscribe
On very rare occasions (e.g. once a year, maybe every other year) I get a small "sore" spot in the corner of my mouth, right on the outer edge of the lip, but just barely. It is barely visible to others, which doesn't seem to correlate with what I think of as a "cold sore." I think it might coincide with that "time of the month" , stress, and/or feeling a tad rundown. If I open my mouth too wide, it's tight and kind of feels like I've split the skin. It gets a slightly rough scab-like texture to it and then goes away within a few days. What is this?!