Irregular whitening on the outer edge of the lower lip

Irregular whitening on the outer edge of the lower lip may be caused by physiological factors, or pathological conditions such as cheilitis or oral lichen planus. Treatment can be achieved through general management and medication. Specific details are as follows:

I. Physiological Factors

This is usually hereditary. Uneven distribution of capillaries in the lower lip leads to localized thickening and whitening, which is a normal phenomenon and generally does not require special treatment. Adjusting diet and increasing intake of fresh fruits and vegetables is recommended.

II. Pathological Factors

1. Cheilitis
This may be related to long-term use of topical corticosteroids or excessive use of facial cosmetics. Inflammatory irritation causes whitening of the lip area, often accompanied by itching and a burning sensation. Treatment under medical guidance may include topical medications such as pimecrolimus cream or tacrolimus ointment.

2. Oral Lichen Planus
This is a mucosal lesion caused by autoimmune issues, characterized by radiating white streaks on the lower lip. Treatment should follow medical advice and may include topical agents such as desonide cream or compound fluticasone ointment.

In addition to the above causes, trauma, vitiligo, or albinism could also lead to such symptoms. Patients are advised to seek timely evaluation at a reputable medical facility for proper diagnosis and targeted treatment, and to ensure adequate rest and avoid excessive fatigue.