Lichen nitidus is a rare, chronic skin eruption that is characterized by round skin-colored papules, which are flattened on top. The papules are about 1-3 mm in diameter. They are described as micropapules. Papules mean small, solid bumps rising from the skin that are usually less than 10 mm in diameter. They do not contain any fluid. However, they are caused by an underlying inflammatory condition. The exact cause remains unknown.

The lesions can be localized on the hands, legs, chest, abdomen, or back.

They may cause dryness, a roughness of the skin, and lead to itching and irritation. The symptoms may increase in summer, in humidity, and in situations of stress.

An experienced physician can easily diagnose it clinically. However, a biopsy can be done to confirm the diagnosis.

It is conventionally treated with moisturizers and local cortisone. However, in extensive cases, oral steroids or a (second-generation) retinoid-like acitretin is prescribed.

It is not directly related to lichen planus. It can be confused with lichen planus. Sometimes dermatologists term it "mini lichen planus.”