Cryotherapy

Cryotherapy, also known as liquid nitrogen treatment, is a method used for treating verrucae and warts. This treatment has been used for many years to effectively destroy viral cells by exposing them to extremely cold temperatures.

The process involves freezing the affected area, creating an ice ball that destroys the virus and surrounding cells. The damaged cells rupture, releasing the virus into the bloodstream, where it is removed from the body by the immune system.

1. Preparation: The skin is prepared by removing any callused and dead skin surrounding the verruca or wart and then sterilised with a skin disinfectant.
2. Application: Liquid nitrogen is sprayed on the area for a couple of minutes with intervals of rest and re-application.
3. Aftercare: The area is dressed, and the podiatrist will provide appropriate aftercare advice.

During the treatment, very little pain is experienced. It usually feels very cold with a slight stinging sensation that eases off within a few minutes. After the treatment, the area should blister within 24-48 hours, although this can be delayed in some patients. If discomfort is felt, it is advised to take painkillers such as paracetamol to ease the discomfort.

Occasionally, the lesion may bleed under the skin, forming a blood blister. This is a common outcome and is not a cause for concern. The area needs to blister to eradicate the verruca or wart. If you have any concerns, our team is available on a 24-hour emergency telephone number.

Your podiatrist will advise on the appropriate dressing to use between appointments. The verruca or wart will be assessed 7-10 days post-treatment. If necessary, the podiatrist will freeze the area again. Some verrucae and warts can be resilient and may require multiple treatments. Your podiatrist will discuss this with you during your initial appointment.