If they are a row of small bumps
, then Fordyce spots is an important possibility. They are small
yellowish-white granules on the inner surface and border of the lips. Treatment of Fordyce spots includes CO2 laser or electro desiccation, TCA chemical peels(temporary treatment),diathermy or laser vaporization.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided.