BENIGN LICHENOID KERATOSIS
By Gary M. White, MD
The benign lichenoid keratosis (BLK) is usually formed by the sudden inflammation of a preexisting seborrheic keratosis. Less commonly, the inflammation of a solar lentigo can form a BLK.
The patient presents with an itchy, inflamed, red/brown plaque. The patient usually gives the history of a preexisting brown spot that then becomes inflamed. The chest is the most common location. Multiple BLKs may occur and be both chronic and pruritic.
If there is any question of the diagnosis, a shave biopsy should be performed. Otherwise, no treatment or cryotherapy may be performed.
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