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Lichenoid keratosis

Lichenoid keratosis

Lichen planus—like keratosis


Lichen planus—like keratosis is a benign squamoproliferative lesion showing chronic inflammation and interface changes (likely representing active regression).

ICD-O code



Lichenoid keratosis


This common lesion presents in adult-hood (mean age: 59 years), with a female-to-male ratio of 2:1. Lichen planus—like keratosis most frequently occurs in White populations.


Lichen planus—like keratoses present as solitary lesions, most commonly on the trunk (in 76% of cases), followed by the limbs (in 33%), and uncommonly on the head and neck (in 3%).

Clinical features

Lichen planus—like keratoses are erythematous plaques with variable scale, measuring 5—20 mm. Dermoscopy shows irregular telangiectatic vessels and uniform clusters of grey dots .


Lichen planus-like keratosis is a benign intraepidermal keratotic neoplasm.

Prognosis and predictive factors

Lichen planus—like keratosis is entirely benign.


WHO classification of skin tumours, 4th edition (2018): 60-61.

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