Recognizing Atypical Oral Lichen Planus

From unusual locations and pigmentation to asymmetrical presentations, understanding the clinical variations of oral lichen planus is essential for accurate diagnosis, biopsy, and ongoing surveillance.

By Kristen Pratt Machado On Nov 10, 2026

Which clinical feature is considered pathognomonic of reticular oral lichen planus (OLP)?

Close-up clinical photograph of oral mucosal lichen planus.

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Diffuse red patches

Wickham striae

White plaques on the tongue

Melanotic pigmentation

Correct! Wrong!

Wickham striae are the characteristic lattice-like white lines seen in reticular OLP, the most common clinical form of the disease.

Which form of oral lichen planus is most often associated with burning pain and has the highest risk of malignant transformation?

Close-up of an oral ulcer inside the lower lip.

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Reticular

Papular

Erosive

Plaque-like

Correct! Wrong!

Erosive OLP is associated with symptomatic burning and has the highest reported risk of malignant transformation among the OLP forms. These lesions require close monitoring and follow-up.

Which of the following is recommended when a patient presents with suspected OLP lesions?

Gloved hands examining the inside of a patient’s mouth.

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Monitor the lesions without further evaluation if asymptomatic

Prescribe topical corticosteroids before confirming the diagnosis

Perform a biopsy and monitor lesions for clinical changes

Refer only if the patient reports pain

Correct! Wrong!

Biopsy is advised for suspected OLP and lichenoid-type lesions to rule out dysplasia or other potentially malignant conditions. Ongoing monitoring, oral cancer examinations, and repeat biopsies when indicated are important because lesions may change over time.

Recognizing Atypical Oral Lichen Planus

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