What is it? A verruca, also known as a plantar wart, is a small, non-cancerous growth that appears on the sole of the foot (the plantar surface). Verrucae are caused by an infection with a strain of the Human Papilloma Virus (HPV). The virus is highly contagious and thrives in warm, moist environments, making communal areas like swimming pools, gym changing rooms, and showers common places for transmission.

HPV can enter the skin through tiny, microscopic cuts or breaks. Once inside, it affects the skin cells, causing them to multiply rapidly and form the characteristic rough, raised growth. While they are usually harmless, verrucae can be painful, unsightly, and can spread to other parts of your foot or other members of your household. In the UK, they are one of the most common reasons for seeking a podiatry appointment.

What are the symptoms? Verrucae vary in appearance but generally have the following features:

• Appearance: They look like small, hard, calloused bumps with a rough, "cauliflower-like" surface. They are typically flat rather than raised due to the pressure of walking.
• Black Dots: You might see tiny, pinpoint black dots within the verruca, often mistakenly called 'seeds'. These are actually small, clotted blood vessels.
• Location: They can appear on the heels, balls of the feet, or between the toes. Sometimes multiple verrucae can cluster together, forming a "mosaic verruca."
• Pain: They can be painful when pressure is applied, such as when walking or standing, or when squeezed from the sides. The pain is often described as a pricking sensation.
• Loss of Skin Lines: The normal skin striations or fingerprint lines on your sole will be interrupted by the verruca.

What causes it? The sole cause of verrucae is infection with the HPV virus. While anyone can develop a verruca, certain factors increase susceptibility:

• Age: Children and adolescents are more susceptible.
• Immune System: People with a weakened immune system are more likely to catch the virus or have stubborn, persistent verrucae.
• Hygiene: Walking barefoot in communal, moist areas significantly increases the risk.
• Skin Health: Small cuts, abrasions, or soggy skin are easier points of entry for the virus.

What are the treatment options? While many verrucae eventually resolve on their own, especially in children, they can be persistent, spreading, or painful, requiring professional treatment. A private podiatrist can offer advanced options that are more effective than over-the-counter remedies:

• Clinical Salicylic Acid Treatment: A strong, professional-grade acid is precisely applied to the verruca to destroy the infected tissue and stimulate an immune response. This requires multiple weekly visits.
• Cryotherapy: This involves 'freezing' the verruca using liquid nitrogen. The extreme cold creates a blister around the verruca, which eventually causes it to fall off. Multiple sessions are usually necessary.
• Verrutop is a highly effective, professional-use topical treatment for stubborn verrucas and warts, boasting up to a 90% success rate within 1-6 sessions. Using a specialized Nitrizinc complex, it painlessly "mummifies" (dries out) the tissue, causing the wart to detach without needles or severe tissue damage
• Verruca Needling (Falknor’s Procedure): A unique, highly effective minor surgical procedure carried out under local anaesthetic. The podiatrist uses a sterile needle to gently break up the verruca tissue, pushing the virus deeper into the skin layers to intentionally 'show' the virus to the body's immune system, triggering a full-body immune response to clear it.
• Swift Microwave Therapy: (Where available) This cutting-edge treatment uses microwave energy precisely targeted at the verruca. It delivers a controlled heat that triggers a strong immune response, often requiring fewer treatments than traditional methods.
• Surgical Excision: In rare, resistant cases, the verruca may be surgically removed.
• Prevention and Hygiene Advice: Guidance on keeping your feet dry, protecting them in communal areas, and avoiding spreading the virus.