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Lichen simplex chronicus 2.jpg
SymptomsThick skin, exaggerated skin markings[1]
CausesExcessive rubbing, scratching[1]

Lichenification is thick hard skin with prominent skin markings, typically from repeated scratching or rubbing.[1] Sites of the body prone to rubbing such as the neck, wrists, hands, forearms, waist, genital area, legs and tops of feet, are particularly susceptible.[2] Its presence is usually a clue to another problem.[2]

It may occur in lichen simplex chronicus, or be due to other conditions which include eczema, psoriasis, excessive dry skin, pityriasis rubra pilaris, anxiety, and obsessive-compulsive disorders.[2] If generalised, it may be a sign a more serious condition such T-cell lymphoma and Sézary syndrome.[2] It may require tests to find out why the excessive itch.[2]


See also


  1. 1.0 1.1 1.2 Morris-Jones, Rachael (2019). "1. Introduction". In Morris-Jones, Rachael (ed.). ABC of Dermatology (7th ed.). Hoboken: Wiley Blackwell. pp. 4–6. ISBN 978-1-119-48899-6. Archived from the original on 2023-07-06. Retrieved 2023-07-05.
  2. 2.0 2.1 2.2 2.3 2.4 Aboobacker, Shamma; Harris, Blair W.; Limaiem, Faten (2022). "Lichenification". StatPearls. StatPearls Publishing. PMID 30726017. Archived from the original on 2021-03-10. Retrieved 2022-05-16.