Lichenoid Keratosis

Lichenoid keratosis is usually a benign solitary lesion that looks reddish to brown and similar in appearance to a lentigo, Bowen’s disease, or superficial basal cell carcinoma. The lesions appear to develop from a regressing existing lesion such as a lentigo or seborrhoeic keratosis.

Lichenoid keratosis usually appears as an inflamed area on the upper torso and extremities, and sometimes on the face. This condition can easily be mistaken for another dermatological affliction called photoderatoses.

Lichenoid keratosis sufferers are usually Caucasians between the ages of 30 and 80. This condition affects females twice as often as men. Those affected usually have had frequent periods of unprotected or under-protected sun exposure.


Lichenoid ketatosis can be removed surgically through electro or laser surgery. During this procedure, a local anesthetic is used and the lesion is removed and sent in for a biopsy to be certain that the cells that have been removed are not cancerous.

Liquid nitrogen may also be used to remove lichenoid keratosis. During this process, the lesion is frozen with liquid nitrogen and removed by curettage, a surgical scraping with an instrument called a curette. As before, once removed the cells will be sent in for a biopsy to be tested.

Topical creams and ointments are available by prescription from your doctor. A couple of commonly prescribed creams, namely Tretinoin and Imiquimod, have a corticosteriod as their active ingredient.

Lichenoid keratosis is also known as benign lichenoid keratosis, solitary lichen planus, lichen planus-like keratosis and involuting lichenoid plaque.