Skin nontumor

Lichenoid and interface reaction patterns

Lichen striatus

Topic Completed: 1 August 2011

Minor changes: 10 November 2020

Copyright: 2002-2021,, Inc.

PubMed Search: Lichen striatus

Mowafak Hamodat, M.B.Ch.B., M.Sc.
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Cite this page: Hamodat M. Lichen striatus. website. Accessed December 3rd, 2021.
Definition / general
  • Small papules that expand over time to form bands or streaks, then disappear
  • Usually affects extremities of children in spring and summer
  • Case clustering has been documented
Clinical features
  • Solitary unilateral, erythematous flesh colored lichenoid or sometimes psoriasiform scaly papule, which coalesce into a continuous or interrupted or curved bands
  • Self limiting, disappears within months or a year of onset
Clinical images

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Lichen striatus

Microscopic (histologic) description
  • Spongiosis and vacuolar interface change; also acanthosis and parakeratosis
  • Dermal lymphohistiocytic infiltrate around superficial and deep vessels and around adnexa
Microscopic (histologic) images

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Various images

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