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Cryotherapy is the process of destroying a skin lesion by freezing it with liquid nitrogen. Liquid nitrogen is applied to the lesion using a cotton applicator stick or an aerosol spray.
The skin may first be numbed with a local anesthetic, Opens dialog. The liquid nitrogen is applied or sprayed onto the lesion and the immediate surrounding tissue. The application may be repeated. A dressing may be applied to the wound.
Cryotherapy is often used to destroy precancerous skin lesions such as actinic keratoses, Opens dialog. It can also be used to treat other skin problems like warts, seborrheic keratoses, and skin tags.
An area where skin tissue has been destroyed by freezing with liquid nitrogen usually heals in 3 to 6 weeks. After the procedure, keep the wound clean and dry. A scab will form over the area.
Cryotherapy is not usually used to treat skin cancer. But it might be an option for some people.
Information about Cryotherapy for Skin Lesions
How well cryotherapy works for skin lesions depends on what is being treated. Precancerous lesions like actinic keratoses usually go away after one treatment. But things like warts may need several treatments.
The risks of cryotherapy include:
Scarring, including a white spot (hypopigmentation) or a dark spot (hyperpigmentation).
Clinical Review Board All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
Clinical Review Board All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
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