Lichenoid keratosis refers to a type of small benign skin lesion. Other than the lesion on the skin, there are very few symptoms of this disorder. This lesion, sometimes referred to as a papule, can range from red to gray in color. Some people, like females or the elderly, seem to be more at risk of developing this type of lesion than others. Treatment for this condition may include medicated creams or surgery.
Keratin is a protein in the body that makes up much of a person's hair, skin, and nails. It can also be found in tooth enamel. As this protein is pushed to the surface of the skin on a person's body, it dies. A buildup of these excess dead keratin cells can lead to a hard or scaly lesion on the body. When this happens, it can resemble lichen, a type of crusty fungus that can often be found growing on rocks and trees.
There are often very few reported symptoms of lichenoid keratosis. Some individuals may report an itchy feeling, and a few may feel a slight stinging sensation. The skin lesion is typically the most common, and sometimes the only, reported symptom.
Lesions associated with lichenoid keratosis are typically quite small. On average, they will usually grow to be no larger than a 0.5 inch to 1 inch (1.3 to 2.5 centimeters). These lesions also have a tendency to form on areas that are frequently exposed to sunlight. They can often be found on a person's torso or arms. In some cases, they can be found on the head, face, or neck. Usually only one of these lesions will appear on a person's body, but a few people may have a couple more.
Skin lesions caused by this condition can vary in color. Many of them may first appear red or pink. Others may be violet, brown, or gray. They can also vary in texture. Some of them may be relatively smooth, for instance, while others may be scaly.
Females are typically more at risk of developing lichenoid keratosis. In fact, some studies show that women are more than twice as likely to get these types of lesions. This skin disorder almost always affects fair skinned and older people.
Lichenoid keratosis treatment typically begins with a medicated topical cream containing corticosteroids. They can also be covered with liquid nitrogen. In a few cases, surgical removal of the lesion may be necessary.