follow @PCDSUKCreated: 17th December 2013 | Last Updated: 21st November 2014
Introduction
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A lichenoid keratosis is a common, benign and often solitary skin lesion. This chapter is set out as follows: |
Aetiology
- Lichenoid keratoses appear to result from the inflammatory destruction of a pre-existing epidermal lesion such as a solar lentigo or seborrhoeic keratosis
History
- Generally asymptomatic
- More common in Caucasians
- Predominantly affect adults
- Equal incidence in males and females
Clinical findings
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Distribution
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More common on UV-exposed areas, but can affect any part of the body
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More common on UV-exposed areas, but can affect any part of the body
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Morphology
- Usually solitary
- Generally less than 1 cm in diameter
- Flat or slightly elevated
- The surface tends to be smooth, although occasionally scaly or warty
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Lesions typically progress from an inflammatory phase, where there may be some pink-red discolouration, to a pigmented phase, where the lesion becomes grey-brown in colour
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Dermoscopic appearance
- Grey granules uniformly distributed throughout the lesion
Images
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Figure: 1 Lichenoid keratosis |
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Figure: 2 Dermoscopic appearance of above |
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Figure: 3 Lichenoid keratosis |
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Figure: 4 Dermoscopic appearance of above |
Management
- Lesions are benign, no treatment is required