Possible differential diagnosis is lichen planus.

Hello, Thank you for describing your symptoms clearly. A persistent white line/patch inside the cheeks and lips with mild burning sensation is most commonly seen in conditions like: • Oral Lichen Planus (immune-related condition) • Frictional keratosis (cheek biting/constant irritation) • Less commonly, a chronic fungal infection Since your lesion has persisted despite vitamin correction and is associated with burning, it should not be ignored. A few important clinical points: ✔ If the white pattern is present on both sides in a similar (symmetrical) manner, Oral Lichen Planus becomes more likely. ✔ If it corresponds exactly to the bite line, it may be frictional. ✔ If it does not wipe off and persists beyond 2–3 weeks, clinical evaluation is necessary. Most such conditions are manageable with proper diagnosis and medication.

Persistent white patches inside the cheeks and lips with mild burning may be due to conditions like oral lichen planus, frictional keratosis, or less commonly a fungal infection. Since it has not resolved, a proper clinical examination is important. I would recommend an in-person evaluation, and if needed, further tests such as scraping or biopsy to confirm the diagnosis and start appropriate treatment. Early assessment is always advisable.

Hello Do you have a history of tobacco chewing?