Skin inflammatory (nontumor)
Spongiotic, psoriasiform and pustular reaction patterns
Lichen simplex chronicus



Topic Completed: 1 August 2011

Revised: 26 March 2019

Copyright: 2002-2019, PathologyOutlines.com, Inc.

PubMed Search: Lichen simplex chronicus [title]


Mowafak Hamodat, M.B.Ch.B., M.Sc.
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Cite this page: Hamodat M Lichen simplex chronicus. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/skinnontumorlichensimplexchronicus.html. Accessed June 17th, 2019.
Definition / general
  • Plaque like condition due to chronic rubbing and scratching
Terminology
  • Also called neurodermatitis
Clinical features
  • Thick, scaly plaques with erythema, well demarcated from surrounding skin
  • Associated with excoriation, lichenification, crusting
  • Raised nodules are called prurigo nodularis
Microscopic (histologic) description
  • Marked hyperkeratosis associated with foci of parakeratosis
  • Prominent granular cell layer
  • The epidermal rete are elongated and irregularly thickened
  • Mild spongiosis
  • Perivascular and interstitial inflammation with histiocytes, lymphocytes and occasional eosinophils in superficial dermis
  • Occasionally enlarged elongated myofibroblasts, papillary dermal fibrosis, nerve hyperplasia
Additional references
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