When is cryotherapy recommended for actinic keratosis?

An actinic keratosis is a rough, sun-damaged patch that can sometimes progress to a skin cancer, so it should not be dismissed as a harmless dry spot. Cryotherapy applies extreme cold to the lesion, creating a controlled injury that allows abnormal surface cells to shed as the skin heals.

Freezing is often considered for a clearly identified, limited lesion. A thicker, recurrent, widespread, bleeding, tender, or uncertain patch may need a biopsy or a treatment that covers a broader area. Healing can include redness, blistering, crusting, temporary soreness, and a lighter or darker mark.

Arrange a skin examination rather than treating a rough patch at home. Tell the clinician about previous skin cancers, immune suppression, medicines that affect bleeding, poor wound healing, and any change in the lesion.

After freezing, keep the site clean and follow the wound-care instructions. Do not pick a blister or crust. Protect the healing skin from sun exposure, and attend review if the spot does not settle or returns.

Seek prompt assessment for a lesion that grows, becomes thick or painful, bleeds, forms an ulcer, develops a persistent crust, or changes in appearance. After cryotherapy, contact the clinic for spreading redness, pus, fever, worsening pain, or delayed healing.

Ask how the lesion was identified, whether a biopsy is needed, why freezing suits its size and depth, what alternative treatments could cover nearby sun-damaged skin, how to care for the wound, and when it should be reviewed.