Wart removal with cryotherapy is an effective treatment that uses extremely low temperatures to destroy abnormal cells. This procedure is commonly performed by dermatologists, although some suitable over-the-counter products can also be used at home. There are different types of warts, and cryotherapy is applied differently depending on their characteristics. Below, we explore the basic principles of cryotherapy, the types of warts that can be treated and the removal process.

What is cryotherapy?

Cryotherapy is a medical treatment that uses extremely low temperatures to remove unwanted tissue, such as warts. This approach is known for its effectiveness and speed in treating various skin lesions.

Cryotherapy has its origins in ancient medicine, when freezing techniques involving snow or ice were used to treat skin conditions. By the end of the nineteenth century, the French physician Ferdinand von Hebra began using more advanced techniques, laying the foundations for the modern development of cryotherapy.

As technology progressed, the use of liquid nitrogen made it possible to apply cold more precisely, turning cryotherapy into a popular and effective treatment in dermatology.

Basic principles of cryotherapy

Cryotherapy is based on destroying cells through the use of extremely low temperatures, usually achieved with liquid nitrogen. This process freezes the wart or abnormal tissue, causing cell destruction without significantly damaging the surrounding healthy tissue.

Its main principles include:

• Selective freezing of the affected tissue.
• Cell destruction through the formation of ice crystals inside the cells.
• Stimulation of the immune system to help fight the virus responsible for the warts.

Cryotherapy is effective because it allows skin lesions to be treated quickly and safely. Many dermatologists consider it a preferred treatment for different types of warts.

Warts that can be treated with cryotherapy

Cryotherapy is a versatile treatment that can be used for different types of warts. Each type has specific characteristics and may require a particular approach.

Common warts

Common warts, also known as verruca vulgaris, are the most frequent type. They usually appear on the hands and have a rough, cauliflower-like texture.

They can vary in size and may be contagious. Cryotherapy is particularly useful for removing these warts and usually allows for a quick recovery.

Plantar warts

Plantar warts appear on the soles of the feet and may be painful when walking. They have a hard outline and can resemble calluses.

Cryotherapy helps remove these warts, relieving discomfort and improving the patient’s comfort.

Flat warts

Flat warts are smaller and smoother than common warts. They usually appear on the face, neck and hands.

Although they tend to be less aggressive, they can be aesthetically bothersome. Cryotherapy is effective and can remove them discreetly without leaving significant marks.

Filiform warts

Filiform warts are long and narrow and are generally found on the face and neck. They may cause aesthetic discomfort and, although they are usually benign, cryotherapy can remove them safely and effectively.

Genital warts

Genital warts are caused by certain strains of the human papillomavirus, or HPV. They require careful, professional treatment.

Cryotherapy may be a suitable option, but a prior medical assessment is recommended because of the sensitivity of the affected area.

Wart removal with cryotherapy

Removing warts with cryotherapy involves a specific procedure in which each stage must be performed carefully. From preparing the affected area to applying liquid nitrogen, every step is important to ensure successful treatment.

Preparing the affected area

Before beginning treatment, the skin surrounding the wart must be prepared correctly. This may include:

• Applying a salicylic acid gel, if recommended, to soften the wart and improve the effectiveness of the treatment.
• Disinfecting the area to ensure that it is clean and reduce the risk of infection.

This preparation helps maximise the results and minimise discomfort after treatment.

Applying liquid nitrogen

Liquid nitrogen is used to freeze the wart. The process involves several steps.

Use of cotton-tipped applicators and other devices

Liquid nitrogen can be applied using different methods. Some of the most common include:

• Cotton-tipped applicators, which allow precise application.
• Specially designed sprays, which distribute the liquid nitrogen evenly over the wart.

Application and tissue-thawing time

The amount of time the liquid nitrogen remains in contact with the wart varies according to its size and depth.

It is generally applied for:

• Between 10 and 30 seconds, which is usually enough to achieve effective freezing.
• A thawing cycle, allowing the tissue to recover before the liquid nitrogen is applied again, if necessary.

The wart-freezing process

Once the cryotherapy has been applied, the wart begins to freeze. This process must be carried out carefully.

The freezing must be deep enough to destroy the infected cells. The temperatures reached are extremely low, making both the technique and the application time crucial.

After the treatment, the tissue is allowed to thaw. This helps the treated area recover and is essential for the effectiveness of the procedure and for reducing possible side effects.

Benefits of cryotherapy for wart removal

Cryotherapy is an effective and safe option for removing warts. It offers several advantages compared with other methods.

Treatment effectiveness

Cryotherapy has demonstrated a high wart-removal rate, exceeding 90% effectiveness in many cases. Freezing destroys the infected cells, which allows the wart to be removed completely in one or more sessions.

This approach is particularly useful for treating different types of warts, including common and plantar warts.

Speed of the procedure

One of the main advantages of cryotherapy is the speed of the treatment. Each session usually lasts only a few minutes, allowing patients to return quickly to their daily activities.

Applying liquid nitrogen is a quick procedure that often does not require anaesthesia, making the treatment more straightforward.

Limited impact on healthy tissue

Cryotherapy treats the wart locally, minimising damage to the surrounding healthy tissue. This is important because it reduces the risk of scarring and allows for a faster recovery.

Precise application techniques ensure that the treatment focuses only on the affected area.

Comparison with other wart-removal techniques

• Less pain: Compared with surgery or laser treatments, cryotherapy is usually less painful.
• Quick recovery: Unlike other treatments that may require prolonged aftercare, cryotherapy generally allows an almost immediate recovery.
• Affordable cost: In many cases, cryotherapy is more affordable than other specialised wart-removal treatments.

These benefits make cryotherapy a preferred option for people seeking an effective wart-removal treatment without additional complications.

Possible side effects of cryotherapy

Cryotherapy is generally a safe treatment, although some side effects may occur. It is important to be aware of the possible changes and sensations that may appear after the procedure.

Changes in the treated skin

After treatment, it is common to notice certain reactions in the affected area. The most frequent changes include:

• Redness: The treated area may temporarily become red as a response to the freezing.
• Swelling: Mild swelling may appear and usually disappears within a few days.
• Blistering: In some cases, fluid-filled blisters may form as part of the healing process.
• Changes in pigmentation: Temporary hypopigmentation or hyperpigmentation may occur in the treated skin.

Temporary sensations after treatment

Certain sensations in the treated area are normal, including:

• Itching or burning: Some patients report mild itching or burning, which is usually temporary.
• Mild pain: Slight pain similar to a pinprick may be experienced. This can generally be relieved with common painkillers.

Managing possible complications

Although serious complications are rare, it is important to watch for symptoms that could indicate a problem. These may include:

• Fever or general discomfort: Persistent fever or unusual discomfort should be assessed by a doctor.
• Persistent bleeding: Bleeding that does not stop may indicate a more serious complication and should be evaluated by a healthcare professional.
• Unpleasant-smelling discharge: Unusual discharge may be a sign of infection and requires medical attention.

Aftercare following cryotherapy

Aftercare is essential to ensure proper recovery and prevent possible complications. These measures help maximise the results of the treatment and support the healing of the treated skin.

Caring for the treated area

It is important to keep the treated area in good condition. The following recommendations should be followed:

• Do not scratch or touch the treated wart, as this may cause irritation or infection.
• Keep the area clean and dry, using gentle soaps that do not irritate the skin.
• Monitor the area for any changes, such as excessive redness, swelling or unusual discharge, and consult a dermatologist if necessary.

Topical treatments and sun protection

Applying creams or topical products may help relieve discomfort after the procedure. Recommendations may include:

• Using moisturising or antibacterial creams as directed by a doctor to support healing.
• Applying broad-spectrum sunscreen to the treated area for at least two weeks to prevent hyperpigmentation and protect the sensitive skin.

The importance of preventing infection

After treatment, the skin may be more vulnerable to infection. It is therefore important to:

• Avoid activities that cause excessive sweating, such as intense exercise, during the first few days.
• Avoid immersing the treated area in swimming pools, hot tubs or public baths until the skin has completely healed.
• Wear loose clothing that does not rub against the affected area, reducing the risk of irritation.

Consulting a doctor before treatment

A medical assessment is essential before undergoing cryotherapy. A dermatologist can determine whether it is the most appropriate treatment by considering the patient’s general health and correctly identifying the type of wart.

A prior consultation also makes it possible to assess potential risks and discuss any concerns regarding side effects or interactions with existing medical conditions.

Treatment should always be personalised to ensure that the selected approach is suitable for each patient’s individual needs.