Keratoses are scaly thickenings on the surface of the skin. They are usually found in sun-exposed sites on the face, neck, back and hands. Commonly known as liverspots, keratoses are a form of precancer.

Most keratoses do not become serious skin cancers. The vast majority are characteristic and do not require a biopsy. In certain cases, a small specimen may be sent to the laboratory for microscopic examination. If the biopsy report is serious, I will call you; otherwise I will write to you with further information.

Most keratoses are treated with cryosurgery. Liquid nitrogen is applied to the skin with a cotton-tipped applicator or spray device.

A blister may form in a few hours or days after treatment. If it fills with fluid and becomes uncomfortable, puncture the side of the blister with a sterile needle. The keratosis usually dries up and comes off with the top of the blister within two to three weeks.

Cryosurgical fees are determined by location, type and number of keratoses involved. The laboratory will send a separate bill for the pathology examination, if one is needed. Most medical insurance plans include treatment of keratoses.

Daily use of sunscreens helps prevent solar keratoses. A specific sunscreen may be recommended for you. Sunscreens do not require a prescription.

If you have any questions concerning your keratoses, please call the office.