Handheld cryotherapy device: what to know

A cryotherapy device delivers very cold gas or liquid through a handpiece or spray tip. The cold damages targeted tissue so the treated lesion can dry, blister, and shed during healing. The method is often called cryotherapy for lesion removal, but the device should be used only for a lesion that has been identified as suitable.

A changing mole, a sore that does not heal, or a pigmented lesion should not be frozen without assessment, because destroying tissue can delay diagnosis. Cold can also injure nearby normal skin when the target or treatment time is incorrect.

Tell the clinician about poor circulation, reduced sensation, diabetes, immune problems, a tendency to form thick scars, and medicines that affect healing. Ask what lesion is being treated and whether another method or a biopsy is more appropriate.

After treatment, keep the area clean and follow the dressing instructions. A blister may be part of the planned response; do not deliberately burst it or peel the crust. Protect healing skin from sun and avoid friction. The clinician should explain when bathing, swimming, exercise, and topical products can resume.

Seek prompt advice for spreading redness, warmth, pus, fever, worsening pain, or swelling that extends beyond the treated area. Get urgent help for severe allergic symptoms or rapidly increasing swelling. Arrange review if the lesion grows back, the wound does not heal as expected, or a blister becomes unusually dark or painful.

Ask what the lesion is, why cryotherapy is suitable, and whether tissue needs to be sampled first. Discuss expected blistering, wound care, pigment change, scarring, recurrence, pain relief, and the signs that should trigger a follow-up visit.