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Oral Lichen Planus Clinical Presentation

  • Author: Philip B Sugerman, MDS, PhD; Chief Editor: William D James, MD  more...
 
Updated: Sep 21, 2015
 

History

The clinical history of oral lichen planus and oral lichenoid lesions varies. Complete history taking and physical examination by a dermatologist may be required in patients with extra-oral symptoms or signs associated with oral lichen planus.[23]

Lichen planus may arise in patients with other immunologically mediated disorders, including alopecia areata, dermatomyositis, lichen sclerosis et atrophicus, morphea, myasthenia gravis, primary biliary cirrhosis, ulcerative colitis, and vitiligo.

In many patients, the onset of oral lichen planus is insidious, and patients are unaware of their oral condition. In such instances, the referring medical or dental practitioner identifies the clinical changes in the oral mucosa.

Some patients report a roughness of the lining of the mouth, sensitivity of the oral mucosa to hot or spicy foods or oral hygiene products, painful oral mucosa, sore gums, red or white patches on the oral mucosa, red gums, or oral ulcerations.

Approximately two thirds of patients with oral lichen planus report oral discomfort, especially in association with atrophic and erosive lesions. Erythematous and erosive lesions are often sensitive or painful. Symptoms vary from mucosal sensitivity to continuous debilitating pain.

Oral mucosal lichenoid lesions may occur after the administration of systemic drugs such as nonsteroidal anti-inflammatory drugs (NSAIDs), sulfonylureas, antimalarials, beta-blockers, and some angiotensin-converting enzyme (ACE) inhibitors. The period between the commencement of the drug therapy and the clinical appearance of oral lichen planus–like disease varies.

In rare cases, oral mucosal lichenoid lesions occur after a dental restoration is performed or after the patient starts using a denture; the lag period varies. Patients with an associated allergy to metals or components of the appliance should be evaluated by means of patch testing.[24]

Up to 44% of patients with oral lichen planus develop coincident skin lesions. Conversely, more that 70% of patients with cutaneous lichen planus develop coincident oral lichen planus.

The genitals are involved in as many as 25% of women with oral lichen planus, compared with only 2-4% of men with oral lichen planus. The features are similar to those of the oral lesions. Patients do not often complain of pain or pruritus, although on questioning, they may admit to such symptoms.

In patients with oral lichen planus, scalp involvement (lichen planopilaris) is rare.

Nail involvement in patients with oral lichen planus is uncommon.

In a small group of patients, lichen planus may involve the esophagus, the tympanic membrane, the larynx, or the conjunction.

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Physical

Pertinent physical findings in oral lichen planus are limited to the oral mucosa. Some patients present with coincident lesions on the skin, scalp, nails, genital mucosa, esophageal mucosa, larynx, and conjunctivae. Complete history taking and physical examination by a dermatologist may be required in patients with extra-oral symptoms or signs associated with oral lichen planus.[23]

Patients with reticular lesions are often asymptomatic, whereas those with atrophic (erythematous) or erosive (ulcerative) disease commonly have significant local morbidity. The oral pain is variable and exacerbated by trauma and foods, particularly those that are hot, spicy, or acidic.

Oral mucosal lesions are variable and present as white striations (Wickham striae), white papules, white plaques, erythema (mucosal atrophy), erosions (shallow ulcers), or blisters. The lesions predominantly affect the buccal mucosa, tongue, and gingivae, although other oral sites are occasionally involved. The lesions are usually bilateral.

The lesions may appear as a mixture of clinical subtypes. For example, white streaks and gray streaks may form a linear or reticular pattern on an erythematous background. Alternatively, a central area of shallow ulceration (erosion) may have a yellowish surface (fibrinous exudate) surrounded by an area of erythema.

In most patients, telltale white striations or papules are evident on the buccal mucosa or on the lateral margin of the tongue, either alone or in combination with other lesions.

Gingival lesions commonly appear with a fiery red erythema that affects the entire width of the attached gingiva, a condition previously called desquamative gingivitis.[25]

In patients predisposed to pigmentation, oral lichen planus lesions may be associated with patchy brown melanin deposits in the oral mucosa (inflammatory melanosis).

Oral lichen planus lesions usually persist for many years with periods of exacerbation and quiescence. During periods of exacerbation, the area of erythema or erosion increases, with increased pain and sensitivity. During periods of quiescence, the area of erythema or erosion decreases, with decreased pain and sensitivity. Patients are often unaware of quiescent oral lichen planus, which may manifest as faint white striations, papules, or plaques. Exacerbations of oral lichen planus have been linked to periods of psychological stress and anxiety.

Lichenoid drug reactions have the same clinical features as those of idiopathic oral lichen planus. Lichenoid disease may be unilateral. Lichenoid reactions of the oral mucosa occur on the oral mucosa in contact with (or close to) an amalgam or composite resin dental restoration, or a denture component. Mechanical trauma (the Koebner phenomenon) may exacerbate lichenoid lesions, especially when it affects the midline of the buccal mucosa or the lateral margin of the tongue.

Up to 44% of patients with oral lichen planus develop coincident skin lesions. These typically appear as pruritic, flat-topped, violaceous papules and plaques that predominantly affect the flexor aspects of the wrists or ankles, the extensor aspects of the lower legs, the skin of the lower central part of the back, and the natal cleft.

The genitals are involved in as many as 25% of women with oral lichen planus, compared with only 2-4% of men with oral lichen planus. The features are similar to those of oral lesions.

Nail involvement causes pitting, subungual hyperkeratosis, longitudinal melanonychia, onychorrhexis (longitudinal ridging and grooving), onychoschizia (distal splitting), and onycholysis (separation of the nail plate from the nail bed). Permanent damage to the nail matrix can induce formation of a pterygium (scarring of the proximal nail fold to the nailbed), 20-nail dystrophy, or permanent nail loss (anonychia).

Scalp involvement (lichen planopilaris) produces scarring alopecia with indurated erythematous areas of scalp or perifollicular scaly tender or pruritic papules, follicular plugging, doll’s hair formation (multiple hair shafts emerging from a single follicular orifice), or atrophic scarring with permanent patchy hair loss.

Rarely, laryngeal, esophageal, conjunctival, and tympanic membrane involvement occur.

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Causes

Current data suggest that oral lichen planus is a T-cell–mediated autoimmune disease in which autocytotoxic CD8+ T cells trigger the apoptosis of oral epithelial cells. However, the precise cause of oral lichen planus is unknown.

Reported associations between oral lichen planus and systemic diseases may be coincidental, because (1) oral lichen planus is relatively common, (2) oral lichen planus occurs predominantly in older adults, and (3) many drugs used in the treatment of systemic diseases trigger the development of oral lichenoid lesions as an adverse effect.

In many patients, a cause for the oral lichenoid lesions cannot be identified; in these patients, the disease is called idiopathic oral lichen planus.

Oral lichenoid drug reactions may be triggered by systemic drugs including NSAIDs, beta-blockers, sulfonylureas, some ACE inhibitors, and some antimalarials. In patients with oral lichenoid lesions, be alert for any systemic drug as a cause.

Oral lichenoid contact-sensitivity reactions may be triggered by contact allergens including dental amalgam composite resin, and toothpaste flavorings, especially cinnamates. Skin patch testing may help in identifying contact allergens (see Other Tests). If an allergy is detected, lesions may heal when the offending material is removed.

Oral lichenoid lesions may be triggered by mechanical trauma (Koebner phenomenon) due to calculus deposits, sharp teeth, rough surfaces of dental restorations or prostheses, cheek or tongue biting, and oral surgical procedures. Scale any teeth associated with oral lichen planus lesions to remove calculus deposits and reduce sharp edges. Dental restorations and prostheses that are associated with oral lichen planus lesions should be mirror-polished.

Some studies have revealed viral infections in oral lichen planus, including those due to human papillomavirus (HPV-6, 11, 16, or 18) and human herpesvirus 6. A causal role for viral infection in oral lichen planus has not been identified.

Some studies show an increased incidence of C albicans infection in oral lichen planus. A causal role for C albicans infection in oral lichen planus has not been identified.

Some study findings suggest an association between oral lichen planus and chronic hepatic diseases such as hepatitis C virus (HCV) infection, autoimmune chronic active hepatitis, and primary biliary cirrhosis.[26, 27] This association probably reflects the geographic distribution of HCV disease and lichenoid reactions to various drug therapies (eg, interferon alpha for HCV disease, penicillamine for primary biliary cirrhosis). Oral lichen planus is associated with HCV infection and liver disease in parts of Japan and southern Europe. An association between oral lichen planus and HCV infection has not been detected in British, French, German, Scandinavian, or American patients.

Oral lichenoid lesions may arise in people who habitually chew betel quid. A causal role for betel quid in oral lichen planus has not been identified.

Oral lichenoid lesions are part of the spectrum of chronic graft-versus-host disease that occurs after allogeneic hemopoietic stem cell transplantation.

No consistent association with human leukocyte antigen (HLA) is reported in oral lichen planus. This finding suggests that the patient's genetic background does not play a critical role in oral lichen planus pathogenesis.

Exacerbations of oral lichen planus have been linked to periods of psychological stress and anxiety.

Little evidence supports a connection between diabetes mellitus and oral lichen planus. The oral lichenoid lesion in Grinspan syndrome (triad of oral lichen planus, diabetes mellitus, and hypertension) is probably an adverse effect of the drug therapy for diabetes mellitus and hypertension.

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Contributor Information and Disclosures
Author

Philip B Sugerman, MDS, PhD Senior Clinical Science Manager, Abbott Immunology, Abbott Laboratories

Philip B Sugerman, MDS, PhD is a member of the following medical societies: American Academy of Oral and Maxillofacial Pathology, International Association for Dental Research

Disclosure: Nothing to disclose.

Coauthor(s)

Stephen R Porter, MD, PhD FDS RCS, FDS RSE, Professor of Oral Medicine, University College London; Academic Head, Director of Research Strategy, Oral Medicine/Special Needs Unit, Division of Maxillofacial Diagnostic, Medical and Surgical Sciences, Eastman Dental Institute for Oral Health Sciences

Stephen R Porter, MD, PhD is a member of the following medical societies: British Association of Oral and Maxillofacial Surgeons, Royal College of Surgeons of England, Royal Society of Medicine, Royal College of Surgeons of Edinburgh

Disclosure: Nothing to disclose.

Specialty Editor Board

Michael J Wells, MD, FAAD Associate Professor, Department of Dermatology, Texas Tech University Health Sciences Center, Paul L Foster School of Medicine

Michael J Wells, MD, FAAD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American Medical Association, Texas Medical Association

Disclosure: Nothing to disclose.

Drore Eisen, MD, DDS Consulting Staff, Department of Dermatology, Dermatology Research Associates of Cincinnati

Drore Eisen, MD, DDS is a member of the following medical societies: American Academy of Dermatology, American Academy of Oral Medicine, American Dental Association

Disclosure: Nothing to disclose.

Chief Editor

William D James, MD Paul R Gross Professor of Dermatology, Vice-Chairman, Residency Program Director, Department of Dermatology, University of Pennsylvania School of Medicine

William D James, MD is a member of the following medical societies: American Academy of Dermatology, Society for Investigative Dermatology

Disclosure: Nothing to disclose.

Additional Contributors

Gregory J Raugi, MD, PhD Professor, Department of Internal Medicine, Division of Dermatology, University of Washington at Seattle School of Medicine; Chief, Dermatology Section, Primary and Specialty Care Service, Veterans Administration Medical Center of Seattle

Gregory J Raugi, MD, PhD is a member of the following medical societies: American Academy of Dermatology

Disclosure: Nothing to disclose.

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Plaquelike oral lichen planus on the buccal mucosa on the left side.
Reticular oral lichen planus on the buccal mucosa on the left side.
Ulcerative oral lichen planus on the dorsum of the tongue.
 
 
 
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