LICHEN SIMPLEX CHRONICUS
The term lichen simplex chronicus (LSC) refers to the changes of the skin that occur after chronic rubbing. The term lichenified refers to skin thickening with accentuation of the skin markings.
- Patients with anxiety, and in particular those with obsessive–compulsive disorder, have a significantly increased risk of developing LSC.
- Prurigo nodularis is a very similar condition where nodules form.
- See also LSC of the groin for NSFW pictures.
The skin becomes lichenified in a localized plaque. The plaque may range in size from 1-10 cm. Linear excoriations or erosions may be apparent. Any area of the body may be affected, but typical locations include the scrotum or vulva and the ankle. The patient with atopic dermatitis (AD) often develops LSC. In fact, any lichenification in an patient with AD is from scratching or rubbing until proven otherwise. Psoriatic lesions may be chronically scratched giving rise through Koebnerization to psoriatic LSC.
Chronic rubbing of the skin can cause tremendous thickening (lichenification).
A mix of LSC and prurigo nodularis.
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