What should you know about papular oral lichen planus?

Oral lichen planus can affect the inner cheeks, gums, tongue, or other mouth surfaces. Papules may join into patterns, while nearby tissue can look white, red, swollen, or raw. Burning with spicy or acidic foods, tenderness, dryness, or an itchy skin rash may accompany it. The condition is not contagious, but several mouth disorders can resemble it.

Diagnosis is based on an examination of the mouth and skin, medication history, and sometimes a biopsy. A dentist or dermatologist may inspect areas outside the mouth because lichen planus can affect skin, nails, or other mucosal surfaces.

Use a soft toothbrush, choose a mild toothpaste, and avoid tobacco, alcohol-containing mouthwashes, and foods that clearly trigger stinging. Keep dental appointments so plaque, sharp teeth, or ill-fitting dental work can be addressed. Prescribed topical corticosteroids may calm mouth inflammation; oral corticosteroid treatment may be considered when symptoms are extensive or difficult to control.

Do not apply skin products inside the mouth unless a clinician has prescribed them for that use. Keep a brief record of ulcers, bleeding, food triggers, and medication changes to make follow-up more useful.

Contact a clinician promptly for a mouth sore that does not heal, a new firm area, unexplained bleeding, increasing difficulty swallowing, or pain that prevents eating and drinking. These symptoms have several possible causes, so examination is needed rather than self-diagnosis.

Ask which mouth areas are involved, whether a biopsy or dental review is appropriate, how to use treatment safely, and what foods or products to avoid. Ask how the mouth will be monitored over time and which changes should be reported sooner.