It can be due to repeated trauma to the lip
and if it is present on the inner side of the <span style = 'background-color: #dae8f4'>lip</span>
can be a possibility. It is usually inside
the lower <span style = 'background-color: #dae8f4'>lip</span>
, under the tongue or the inside
of mouth and caused mainly by biting the lip
s or trauma during eating of food.
Usually it goes away on its own. But if it does not, then corticosteroid injections and surgical removal by scalpel or laser are done by a dermatologist.