Could lump on inside of lower lip be a hypertrophic scar?
It would be unusual for a hypertrophic scar to develop on the inside of the lip or mouth, but it is possible that the lump you have could be scar tissue. You would really need to be examined to give you the best advice.
Id suggest posting a picture, it is pretty difficult for us to give advice on what is occuring if we cannot see. Best, Dr. Emer.