Overview

Oral lichen planus (LIE-kun PLAY-nus) is an ongoing (chronic) inflammatory condition that affects mucous membranes inside your mouth. Oral lichen planus may appear as white, lacy patches; red, swollen tissues; or open sores. These lesions may cause burning, pain or other discomfort.

Oral lichen planus can't be passed from one person to another. The disorder occurs when the immune system mounts an attack against cells of the oral mucous membranes for unknown reasons.

Symptoms can usually be managed, but people who have oral lichen planus need regular monitoring because they may be at risk of developing mouth cancer in the affected areas.

Symptoms

Signs and symptoms of oral lichen planus affect the mucous membranes of the mouth.

Appearance

The lesions may appear as:

  • Lacy, white, raised patches of tissues
  • Red, swollen, tender patches of tissues
  • Open sores

Location

These lesions may appear on the:

  • Inside of the cheeks, the most common location
  • Gums
  • Tongue
  • Inner tissues of the lips
  • Palate

Pain or discomfort

The white, lacy patches may not cause discomfort when they appear on the inside of the cheeks. However, symptoms accompanying red, swollen patches and open sores may include:

  • Burning sensation or pain
  • Sensitivity to hot, acidic or spicy foods
  • Bleeding and irritation with tooth brushing
  • Inflammation of the gums (gingivitis)
  • Painful, thickened patches on the tongue
  • Discomfort when speaking, chewing or swallowing

Other types of lichen planus

If you have oral lichen planus, you may have lichen planus lesions affecting other parts of your body.

  • Skin. Lesions usually appear as purplish, flat-topped bumps that are often itchy.
  • Genitals. Lesions on the female genitalia often cause pain or burning and discomfort with intercourse. The lesions are usually red and eroded and occasionally appear as white areas. Lesions can also occur on male genitalia.
  • Ears. Lichen planus of the ears can lead to hearing loss.
  • Scalp. When skin lesions appear on the scalp, they may cause temporary or permanent hair loss.
  • Nails. Though rare, lichen planus of the toenails or fingernails may result in ridges on the nails, thinning or splitting of nails, and temporary or permanent nail loss.
  • Eyes. Rarely, lichen planus may involve the mucous membrane surfaces of the eyes, and can cause scarring and blindness.
  • Esophagus. Lichen planus of the esophagus is rare, but when it occurs, it may result in a narrowing of the esophagus or the formation of tightened, ringlike bands in the esophagus that can make swallowing difficult.

When to see a doctor

See your doctor or dentist if you have any signs or symptoms listed above.

From Mayo Clinic to your inbox

Sign up for free and stay up to date on research advancements, health tips, current health topics, and expertise on managing health. Click here for an email preview.

To provide you with the most relevant and helpful information, and understand which information is beneficial, we may combine your email and website usage information with other information we have about you. If you are a Mayo Clinic patient, this could include protected health information. If we combine this information with your protected health information, we will treat all of that information as protected health information and will only use or disclose that information as set forth in our notice of privacy practices. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail.

Causes

It's not known what causes oral lichen planus. However, T lymphocytes — certain white blood cells involved in inflammation — appear to be activated in oral lichen planus. This could indicate an immune disorder, and genetic factors may be involved. But more research is needed to determine the exact cause.

It's possible that, in some people, oral lichen planus may be triggered by certain medications, mouth injury, infection or allergy-causing agents such as dental materials. Stress may be involved in symptoms becoming worse or recurring. However, these causes are not confirmed.

Risk factors

Anyone can develop oral lichen planus, but it's more common in middle-aged women.

Some factors may increase your risk of developing oral lichen planus, such as having a disorder that lowers your immunity or taking certain medications, though more research is needed.

Complications

Severe cases of oral lichen planus may increase the risk of:

  • Significant pain
  • Weight loss or nutritional deficiency
  • Stress or anxiety
  • Depression
  • Scarring from erosive lesions
  • Secondary oral yeast or fungal infections
  • Oral cancer

Dec. 06, 2019
  1. AskMayoExpert. Oral lichen planus. Mayo Clinic; 2018.
  2. Lichen planus. Merck Manual Professional Version. https://www.merckmanuals.com/professional/dermatologic-disorders/psoriasis-and-scaling-diseases/lichen-planus. Accessed March 18, 2019.
  3. Oral lichen planus. American Academy of Oral Medicine. https://www.aaom.com/oral-lichen-planus. March 18, 2019.
  4. Lichen planus. American Academy of Dermatology. https://www.aad.org/public/diseases/rashes/lichen-planus. Accessed March 18, 2019.
  5. Marks JG, et al. Mucous membrane disorders. In: Lookingbill and Marks' Principles of Dermatology. Saunders Elsevier; 2019. https://www.clinicalkey.com. Accessed March 18, 2019.
  6. Marks JG, et al. Inflammatory papules. In: Lookingbill and Marks' Principles of Dermatology. Saunders Elsevier; 2019. https://www.clinicalkey.com. Accessed March 18, 2019.
  7. Olson MA, et al. Oral lichen planus. Clinics in Dermatology. 2016; doi:10.1016/j.clindermatol.2016.02.023.
  8. Kurago, ZB. Etiology and pathogenesis of oral lichen planus: An overview. Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology. 2016; doi:10.1016/j.oooo.2016.03.011.
  9. FDA approves updated labeling with boxed warning and medication guide for two eczema drugs, Elidel and Protopic. U.S. Food and Drug Administration. https://www.fda.gov/Drugs/DrugSafety/PostmarketDrugSafetyInformationforPatientsandProviders/ucm153941.htm. Accessed March 19, 2019.
  10. Gibson LE (expert opinion). Mayo Clinic. Nov. 12, 2019.

Related

Associated Procedures

Products & Services