You've tried the chemist treatments. Nothing worked. Maybe you've had it frozen at the GP - once, twice, three times - and it came back each time. Perhaps you've been putting up with the discomfort for months, or longer, quietly hoping it would resolve on its own.
Verrucae are one of the most persistently frustrating conditions we treat at Lower Limb Clinic. They cause real pain, real embarrassment, and a genuine impact on quality of life, especially for active people, runners, and children. The problem is not that verrucae are untreatable. The problem is that most people are offered treatments with very modest evidence behind them, using approaches that haven't meaningfully changed in decades.
At Lower Limb Clinic on Lisburn Road, we have made a deliberate clinical decision. We do not offer cryotherapy, silver nitrate, or salicylic acid. The evidence does not support them as the best available options, and in our view, patients deserve better than treatments with low success rates that require months of commitment and still frequently fail.
Instead, we offer the three treatments with the strongest evidence base for verruca clearance: Swift microwave therapy, Faulkner's needling, and Verrutop. Each works differently and suits different patients. This article explains all three in depth so you can come to your appointment informed, and together we can choose the pathway most likely to give you clear, healthy feet.
What Is a Verruca? Understanding the Condition
A verruca (plural: verrucae) is a plantar wart, a localised viral infection of the skin caused by the Human Papillomavirus (HPV). It develops when HPV enters the skin through small cuts or abrasions, typically on the sole of the foot or around the toes. Because the foot is a weight-bearing surface, the lesion is often pushed inward rather than growing outward, which is why verrucae can be so disproportionately painful relative to their size.
HPV is extremely common. Research indicates approximately 40% of the population carries some form of the virus, with around 14% experiencing plantar warts at any given time. Transmission is highest in warm, moist communal environments such as swimming pools, gym changing rooms, and sports facilities where the virus can survive on surfaces.
How to Identify a Verruca
Verrucae are frequently mistaken for corns or calluses. Key features to look for:
- Rough, irregular texture with a cauliflower-like appearance when surface skin is pared back
- Tiny black dots within the lesion (thrombosed capillaries, not 'seeds' as commonly described)
- Pain on lateral squeeze (pinching the sides) as well as direct pressure - corns typically hurt on direct pressure only
- Disruption to the normal skin ridge pattern (dermatoglyphics) - the skin 'fingerprint' does not pass through a verruca
- Mosaic verrucae: large clusters of multiple coalesced lesions, common on the ball of the foot or heel
Why the Immune System Is the Key
This is the insight that underpins the most effective modern treatments. When HPV infects the skin, the immune system in most people will eventually mount a response and clear the infection. In children this often happens within a few months. In adults, particularly those under stress, on long-term medication, or with any degree of immune compromise, the immune system may simply fail to 'notice' the infection.
HPV is uniquely adept at hiding from immune surveillance. It replicates entirely within the epidermal cells without triggering the inflammation signals that would normally alert the immune system. The result: a verruca that has been present for years, causing discomfort every day, while the immune system remains entirely unaware of it.
The most effective treatments we use at Lower Limb Clinic are effective precisely because they address this problem, either by directly stimulating an immune response, or by making the viral proteins visible enough for the immune system to finally recognise and attack them.
Why We Don't Offer Cryotherapy, Silver Nitrate, or Salicylic Acid
Many podiatry and GP clinics continue to offer cryotherapy (liquid nitrogen freezing), silver nitrate cauterisation, and salicylic acid as their default verruca treatments. We understand why: they are familiar, inexpensive, and easy to administer. But the evidence for their effectiveness, particularly in adults with stubborn or recalcitrant verrucae, is disappointing.
Published clinical data places clearance rates for cryotherapy at 34-39%, salicylic acid at approximately 53%, and silver nitrate at around 43%. These figures typically require between 5 and 12 treatment sessions, carried out over months, often with dressings and home treatment in between.
Beyond the modest success rates, these destructive approaches share a fundamental limitation: they attack the tissue rather than the virus. They create localised damage in the hope that immune activity triggered by the wound response will happen to clear the HPV. It frequently does not. Recurrence is common.
At Lower Limb Clinic, we made a deliberate decision to retire these treatments in favour of approaches with a substantially stronger evidence base. Our patients deserve treatments that are more likely to work, require fewer sessions, cause less disruption, and produce durable results.
Not sure which treatment is right for you?
Our podiatrists will assess your verruca and recommend the most effective pathway. Book your assessment online or call 028 9013 9185.
The Three Treatments We Offer and the Evidence Behind Each
| Treatment | Sessions | Pain Level | Dressings | Clearance Rate |
|---|---|---|---|---|
| Swift Microwave Therapy | 2-3 | Brief / moderate | No | Up to 83% |
| Faulkner's Needling | 1-3 | None (LA) | Yes (short-term) | ~69-75% |
| Verrutop | 3-6 | Minimal / none | No | Up to 90%* |
* Verrutop manufacturer clinical trial data, up to 6 sessions. Sources: Journal of Foot and Ankle Research 2023; East Kent Podiatry clinical data; Verrutop clinical trial data.
1. Swift Microwave Therapy: Our Gold Standard for Most Patients
Swift is a medical-grade microwave therapy device developed in the UK by Emblation Ltd., licensed for verruca and wart treatment in podiatry and dermatology across the UK, EU, and USA. It is the first-line treatment we recommend for the majority of patients at Lower Limb Clinic, including adults, older children, and anyone with stubborn or recalcitrant verrucae who is fit and willing to tolerate a brief period of discomfort.
How Swift Works
Swift delivers a precisely controlled burst of microwave energy at 8 GHz to a depth of 4-5 mm, exactly where HPV infection resides. The energy interacts with water molecules in the infected tissue, generating rapid localised heating. This controlled hyperthermia denatures HPV-infected proteins, making viral antigens visible on the cell surface and triggering a targeted immune response.
Crucially, Swift does not simply destroy tissue. It educates the immune system, alerting it to the presence of HPV for the first time. Because the immune response is systemic, a well-documented 'bystander effect' means untreated verrucae on the same foot often resolve alongside those that are directly treated.
The Clinical Evidence
A 2023 retrospective study in the Journal of Foot and Ankle Research found an 83.3% clearance rate across 150 plantar warts in 45 patients, achieved in a mean of 2.8 sessions. A separate US study published in the Journal of Cosmetic Dermatology found an 86.4% clearance rate in patients who completed their treatment course, with an average of just 2.3 sessions required.
Research in paediatric patients found Swift achieved 70% clearance of plantar warts in children, compared to just 31-34% for salicylic acid or cryotherapy in the same population.
What to Expect
Each Swift application lasts 2-5 seconds and is repeated 5-8 times per verruca in a single session. There is an intense, brief heat sensation during treatment. Most patients describe it as a sharp sting lasting around one second. After treatment, the skin is intact, no dressings are needed, and you can return to normal activities immediately. Sessions are spaced 4 weeks apart, and we reassess at every visit.
Who Is Swift Suitable For?
- Adults with verrucae persisting for 6 months or more
- Patients who have tried and failed other treatments
- Those with mosaic or multiple verrucae
- Active patients, athletes, and runners for whom dressings are not practical
- Older children and teenagers (assessed case by case)
Contraindications
- Implanted electronic devices (pacemakers, neurostimulators)
- Metallic implants near the treatment site
- Significant peripheral neuropathy or poor circulation in the foot
- Pregnancy (precautionary exclusion)
- Children under 5 years of age
2. Faulkner's Needling: Highly Effective for Resistant Cases
Faulkner's needling is a well-established podiatric procedure with a strong evidence base that remains underused in general practice. At Lower Limb Clinic, it is our recommended pathway for patients with particularly large, deep, or treatment-resistant verrucae, and for those in whom Swift has not achieved full resolution after a standard course.
How Faulkner's Needling Works
The procedure is performed under local anaesthetic, so the patient experiences no pain during treatment. Using a fine needle, the podiatrist repeatedly punctures the verruca, deliberately introducing HPV-infected tissue into the deeper, vascular dermis beneath. This area is rich in immune cells that do not normally have access to the superficial epidermal layers where HPV hides.
The result is a rapid, robust immune response. Because the immune system is now exposed directly to the viral material in an area where it can mount a proper response, clearance rates are high, and the systemic immune effect means that multiple verrucae often resolve following treatment of a single lesion.
The Clinical Evidence
Published data places Faulkner's needling clearance rates at 69-75%, with many studies reporting outcomes towards the higher end of this range for recalcitrant verrucae that have failed other treatments. It is typically performed in 1-3 sessions, and the immune response continues to develop for weeks to months after the final procedure.
What to Expect
Following local anaesthetic injection, the needling procedure itself is painless. The treated area will be dressed after the appointment, and some temporary soreness as the anaesthetic wears off is normal, manageable with standard over-the-counter pain relief. Most patients require only light dressing for a few days. Strenuous activity on the foot is typically restricted for 24-48 hours after each session.
Who Is Faulkner's Needling Recommended For?
- Patients with large, deep, or long-standing verrucae
- Those with multiple or mosaic verrucae (systemic effect means treating one can clear many)
- Patients for whom Swift has not achieved full clearance after a standard course
- Adults who prefer a definitive, limited-session approach
- Those who cannot tolerate the brief discomfort associated with Swift
Ready to get started?
We can often carry out your first treatment at the same appointment as your assessment. Book online now or call 028 9013 9185.
3. Verrutop: The Pain-Free Option for Children and Low Pain Tolerance
Verrutop is a clinically approved topical solution containing a Nitrizinc complex, a formulation of nitric acid, organic acids, and zinc and copper salts. It represents the most evidence-supported topical treatment currently available for verrucae, and in our practice it fills an important clinical role: providing an effective, entirely pain-free option for younger patients and those who are not suitable for or willing to undergo Swift or needling.
How Verrutop Works
Unlike older destructive approaches, Verrutop does not work by freezing or burning the tissue. Instead, it causes a process of mummification and protein denaturation. It chemically alters the proteins within the verruca, desiccating the tissue and progressively causing the lesion to lose vitality, change colour, and detach from the surrounding healthy skin.
Following application by a podiatrist, the treated verruca typically changes colour over subsequent days. Healthy skin gradually renews beneath the lesion until it detaches cleanly. Unlike salicylic acid, which requires daily home application and regular filing, Verrutop is applied in-clinic only, with a 2-week interval between appointments. No home treatment is required.
The Clinical Evidence
Manufacturer clinical trial data reports a clearance rate of up to 90% following a course of up to 6 applications, with many patients achieving clearance in 3-4 sessions. An independent clinical report found 80% of patients achieved clearance within 4 applications. Verrutop has also been included in the BASHH (British Association for Sexual Health and HIV) clinical guidelines as a recognised treatment for HPV-related lesions.
Who Is Verrutop Recommended For at Lower Limb Clinic?
- Children under 10 years of age, for whom the brief discomfort of Swift is often not appropriate
- Patients of any age with a low pain tolerance who are not willing or able to undergo Swift microwave therapy
For all other patients (adults and older children with standard or high pain tolerance), Swift microwave therapy or Faulkner's needling offer higher single-course efficacy and are our first-line recommendation.
What to Expect at Lower Limb Clinic, Lisburn Road
Every verruca patient at Lower Limb Clinic begins with a dedicated assessment appointment. We examine and photograph the lesion(s), take a full clinical history, review any previous treatments, and confirm suitability before recommending a treatment pathway.
Where appropriate, we can carry out the first treatment session at the same appointment, minimising the number of visits required. Our treatment protocols are spaced to optimise immune response: Swift and needling sessions are typically 4 weeks apart; Verrutop appointments are 2 weeks apart.
At every follow-up, we photograph and assess progress. We do not simply repeat the same protocol regardless of response. We adapt based on what we see. If one approach is not delivering the expected progress after 2-3 sessions, we discuss alternatives openly and honestly.
Frequently Asked Questions About Verruca Treatment in Belfast
How many sessions will I need?
This depends on which treatment is most appropriate for you. Swift microwave therapy typically requires 2-3 sessions spaced 4 weeks apart. Faulkner's needling requires 1-3 sessions. Verrutop typically requires 3-6 sessions at 2-week intervals. We discuss expected session numbers at your assessment based on the size, age, and nature of your verruca.
Is Swift verruca treatment painful?
There is a brief, intense heat sensation lasting approximately 1 second during each Swift application. Most patients find this manageable and describe it as a sharp sting that ends immediately when the probe is removed. Faulkner's needling is performed under local anaesthetic and is entirely painless during the procedure. Verrutop is effectively pain-free.
Why don't you offer cryotherapy?
We stopped offering cryotherapy, silver nitrate, and salicylic acid because the clinical evidence does not support them as the best available options. Published clearance rates for cryotherapy are 34-39%, and salicylic acid sits at around 53%, after 5-12 sessions over months. Swift, Faulkner's needling, and Verrutop all achieve substantially higher clearance rates in fewer sessions.
Is verruca treatment available on the NHS in Belfast?
Swift microwave therapy, Faulkner's needling, and Verrutop are not currently routinely available through the NHS in Northern Ireland. They are offered as private treatments at Lower Limb Clinic. See our pricing page for current fees.
Can I have treatment if I have diabetes?
Diabetes does not automatically exclude you from treatment, but careful assessment is essential. Peripheral neuropathy and circulatory impairment in the foot require thorough clinical evaluation before any verruca treatment is undertaken. We have extensive experience managing diabetic and at-risk foot patients.
My child has a verruca - what do you recommend?
For children under 10, Verrutop is our recommended first-line treatment. It is effective, entirely pain-free, and safe from age 6 upwards. For older children and teenagers who can tolerate brief discomfort, Swift may be appropriate. In many cases, particularly for children under 7, watchful waiting remains appropriate if the verruca is painless and not spreading.
Will my verruca definitely clear?
No treatment can guarantee 100% clearance. However, the treatments we offer have the best available evidence behind them. Swift achieves clearance in around 83% of cases, Faulkner's needling in 69-75%, and Verrutop in up to 90% with a full course.
How soon can I exercise after treatment?
Swift therapy requires no dressings and places no restriction on activity. Most patients exercise normally the same day. After Faulkner's needling, we typically advise avoiding strenuous impact activity on the treated foot for 24-48 hours. Verrutop requires no dressings and no activity restriction, though prolonged soaking should be avoided between sessions.
Is the price fixed or does it depend on how many verrucae I have?
The price is fixed per session, regardless of how many verrucae you have. Whether you have one verruca or several, we will treat as many as we can within the appointment time available. You are not charged per verruca.
Which treatment is more successful — Swift or Faulkner's needling?
The published clearance rates for Swift and Faulkner's needling are broadly comparable. The right choice depends on which method of treatment suits you best. With Swift, you should expect to return for several sessions (typically 2–3, spaced 4 weeks apart), there is no anaesthetic, and no dressings are needed. Faulkner's needling can be a one-off procedure performed under local anaesthetic, though some patients may require a second or third session. We do not judge the success of needling until at least 6 weeks after the procedure, as the immune response takes time to develop and clear the virus. At your assessment, we will discuss both options and recommend the best fit for your situation.
Preventing Verrucae: Practical Advice
After investing in treatment, protecting yourself from reinfection is important:
- Always wear flip-flops or pool shoes in communal changing rooms, gym showers, and around swimming pools
- Keep feet clean and dry. Cracked or macerated skin provides easy entry points for HPV
- Avoid sharing towels, socks, or nail care equipment
- Cover active verrucae with a waterproof plaster in shared facilities to reduce transmission risk
- Do not pick at, file, or attempt to self-treat a verruca without professional advice
- Change socks daily; moisture-wicking sports socks are beneficial for active feet
Book Your Verruca Assessment at Lower Limb Clinic, Lisburn Road, Belfast
If you have a stubborn verruca that has resisted previous treatment, or a child who needs a pain-free solution, we can help. Lower Limb Clinic on Lisburn Road offers Belfast's most evidence-based approach to verruca care.
Led by Paul McMullan BSc Hons, MSc, FRCPSGlasg, Fellow of the Royal College of Physicians and Surgeons of Glasgow and one of Northern Ireland's most experienced specialist MSK podiatrists, our clinic combines rigorous assessment with the most effective evidence-based treatments available.
Lower Limb Clinic | Lisburn Road, Belfast
Book your assessment online | Call 028 9013 9185 | Contact us
Don't settle for treatments that don't work. Find out which pathway gives you the best chance of clear, healthy feet, for good.
About the Author
Paul McMullan is a specialist MSK podiatrist and founder of Lower Limb Clinic, Belfast, with clinics on Lisburn Road and Ormeau Road. He holds an MSc in Podiatric Sports Medicine from Queen Mary University of London and is a Fellow of the Royal College of Physicians and Surgeons of Glasgow (FRCPSGlasg). He is HCPC registered with over 15 years of specialist clinical experience in complex lower limb conditions.
Disclaimer: This article is intended for general informational purposes only and does not constitute medical advice. If you have any concerns about a lesion on your foot, please seek assessment from a qualified healthcare professional.
