dermatologic disorders
Lichen Simplex Chronicus
Introduction
Lichen simplex chronicus is a chronic dermatitis caused by repeated skin scratching and/or rubbing. Scratching or rubbing causes further itching and then further scratching and/or rubbing, creating a vicious circle (itch–scratch cycle). Diagnosis is by examination. Treatment is directed at the initial cause of the itch and includes education and behavioral techniques to prevent scratching and rubbing, topical corticosteroids, and antihistamines. (See also Definition of Dermatitis .) 