Odd that it was only one side and not the entire
lip. The following morning, it was perhaps slightly larger, but by midday, it was
gone.
This occurred over the course of a few weeks and then as suddenly as it started it just stopped.
About ten or so years later, it began again. But I recall it happened only once or twice.
Now it is occurring again. But this time it has been off and on over the past year. Most recently yesterday.