What does lichenification refer to in dermatology?

Lichenification in dermatology refers to a thickening of the skin that often results in a dry and rough surface. This condition typically occurs as a response to chronic irritation or inflammation, leading to an exaggerated skin pattern resembling the appearance of lichen or moss. The skin becomes leathery and may also appear darker than the surrounding area. Lichenification is commonly seen in conditions like eczema, where repeated scratching and rubbing of the skin lead to this characteristic thickening.

Other conditions such as small inflamed lesions, fluid-filled blisters, or scabs formed from dried blood represent different dermatological phenomena that do not involve the distinctive texture or thickness associated with lichenification.