What should you know about mouth lichen planus causes?

Oral lichen planus can cause fine white, lace-like lines, red patches, soreness, burning, or shallow erosions on the cheeks, gums, tongue, or lips. It is linked with an immune response, but a single cause is not always found. Some medicines and dental materials can produce a similar reaction, while sharp teeth, rough fillings, tobacco, alcohol, or spicy foods may aggravate symptoms. A clinician may need to distinguish it from infection, allergy, trauma, or another mouth condition.

Book a dental or dermatology assessment for persistent white or sore mouth patches. Keep a record of new medicines, dental work, foods, and symptom flares. Use a soft toothbrush, gentle toothpaste, and avoid tobacco, alcohol-containing mouthwash, and foods that sting. Do not stop a prescribed medicine without discussing a safer review plan. Treatment may include topical or oral corticosteroids when a clinician confirms the diagnosis and considers your health history.

Seek prompt assessment for a mouth sore that does not heal, a firm area, repeated bleeding, increasing pain, difficulty swallowing, unexplained weight loss, or a patch that changes in texture or colour. Urgent care is appropriate for swelling that affects breathing or drinking. Regular follow-up matters because ongoing mouth inflammation and persistent changes deserve monitoring even when symptoms fluctuate.

Could a medicine, dental material, or local irritation be contributing? Is an examination or biopsy needed? Which foods and products should I avoid? How will persistent or changing patches be followed?