Lichen Spinulosus Workup

Updated: Aug 14, 2017
  • Author: Christopher R Gorman, MD; Chief Editor: William D James, MD  more...
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Workup

Approach Considerations

Caccetta et al proposed an algorithm for a clinical approach to the diagnosis of digitate keratoses. [8]

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Laboratory Studies

Diagnosis should be made on clinical grounds alone. At present, no laboratory tests are specific or diagnostic for lichen spinulosus.

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Histologic Findings

Histologic findings of lichen spinulosus are similar to those observed in keratosis pilaris. In lichen spinulosus, dilated hair follicles are filled with a keratotic plug. An inflammatory lymphocytic infiltrate occurs around the follicle and in the dermis. Hyperkeratosis, parakeratosis, and acanthosis may be present in the follicle.

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