Causes and How You Get Plantar Warts
Plantar warts, also known as verruca plantaris, are benign growths caused by the human papillomavirus (HPV). They typically develop on the soles of your feet, often in high-pressure areas like the ball of the foot or heel. However, they can appear anywhere on the foot, including less common spots. These warts are usually accompanied by thickened skin, which can make walking or standing painful and difficult.
At Valley Foot Care, Inc. in Phoenix, AZ, we understand how plantar warts can impact your comfort and daily activities. While these growths are generally harmless, they can be bothersome and should not be ignored, as they can lead to complications if left untreated.
Causes and How You Get Plantar Warts
Plantar warts are caused by a virus—HPV—that enters the skin through tiny cuts or abrasions. This virus thrives in warm, moist environments, making places like public showers, swimming pools, and locker rooms prime areas for transmission.
When HPV enters the skin, it stimulates the rapid growth of cells, causing the formation of a wart. Over time, this wart may become painful, particularly when pressure is applied to it during walking or standing.
Recognizing the Symptoms of Plantar Warts
The symptoms of plantar warts may vary depending on the location and size of the wart. Common signs include:
- A small, grainy growth on the foot: Plantar warts often appear as small, flesh-colored or brown bumps. They typically have black dots in the center, which are tiny blood vessels that have formed within the wart.
- Pain under pressure: Because plantar warts typically form on weight-bearing areas, you may feel pain or tenderness when standing, walking, or wearing shoes.
- Thickened skin: The skin around the wart may become hardened or calloused due to pressure and friction.
- Visible growth or multiple warts: In some cases, a single wart may grow into a cluster of warts known as mosaic warts. These can become large and spread across the sole of the foot.
It’s important to differentiate plantar warts from corns or calluses, which can look similar but require different treatments.
How We Diagnose Plantar Warts at Valley Foot Care, Inc.
At Valley Foot Care, Inc., diagnosing plantar warts is usually straightforward. We start with a physical examination of your foot, looking for characteristic signs like black dots, thickened skin, and the typical location of the wart.
In some cases, plantar warts are mistaken for corns or calluses. Corns are thickened areas of skin that occur on the top or tip of the toes, while calluses form on the bottom of the feet. However, a plantar wart is typically much more painful under pressure. Our trained podiatrists can distinguish between these conditions based on their appearance and will discuss the best course of treatment with you during your visit.
If there’s any uncertainty about the diagnosis, or if the wart is unresponsive to treatment, we may take a small sample of the lesion to be sent to a pathology lab for further analysis.
Treatment Options for Plantar Warts
While plantar warts are often benign, they can become painful and spread if left untreated. There are several treatment options available, ranging from conservative measures to more invasive procedures, depending on the severity of the wart.
Conservative Treatments
For many patients, non-surgical treatments are sufficient to remove or alleviate the discomfort caused by plantar warts.
- Paring Down the Thickened Skin (Debridement):
Removing the thickened skin surrounding the wart can reduce pressure and pain. This is often done in a clinical setting to avoid infection. - Topical Treatments (Salicylic Acid):
Over-the-counter treatments like salicylic acid can soften and remove the wart over time. However, over-the-counter treatments should be used carefully, as improper use may cause burns or further irritation to the surrounding skin, leading to ulcerations, infections and amputations.
Important: We do not recommend using over-the-counter acid removers without consulting with a podiatrist. Incorrect application can cause damage to healthy skin and potentially lead to complications. - Cryotherapy (Freezing):
This procedure involves freezing the wart with liquid nitrogen, causing it to blister and fall off. Cryotherapy is often effective for smaller warts and is a common procedure at Valley Foot Care, Inc. - Duct Tape Method:
Some patients use duct tape to cover the wart for six days, then remove it, soak the area, and scrape off the dead tissue. While this method may not be as effective for larger warts, it can help with smaller, more stubborn growths. - Custom Arch Supports
If you have recurrent or resistant plantar warts, custom arch supports may help by reducing pressure on the wart and improving foot alignment. These can also help stimulate the immune system to fight off the virus.
Surgical Treatments
When conservative treatments fail or if the wart becomes too painful or large, surgical intervention may be necessary. Surgical options include:
- Excision (Surgical Removal):
In this procedure, the wart is carefully excised, or cut out, from the skin. The wart is sent to a pathology lab for analysis to ensure it is not cancerous. - Laser Treatment:
A laser can be used to target and destroy the wart tissue. This method is often used for warts that have proven resistant to other treatments.
Post-surgery, it’s important to follow proper wound care instructions to promote healing and avoid infection. This typically involves keeping the area clean, wearing a protective bandage, and limiting weight-bearing activity until the wound has healed.
Prevention Tips for Plantar Warts
Plantar warts are contagious, but there are several precautions you can take to lower your risk of contracting or spreading them:
- Avoid walking barefoot in public places such as locker rooms, pools, or showers. Always wear flip-flops or other protective footwear.
- Do not share shoes, socks, or towels with others, especially if you suspect they have a plantar wart.
- Keep your feet clean and dry, as HPV thrives in moist environments. Moisturize your feet to avoid cracks that could allow the virus to enter.
- Treat cuts or abrasions promptly to prevent exposure to the virus. Small cracks in the skin are an easy entry point for HPV.
- Talk to your podiatrist if your feet sweat excessively. This is a condition known as hyperhidrosis. Treating this is the key to preventing warts and spread of warts. Simple changes such as wearing bamboo socks that wick away moisture from the foot, as well as switching out your shoes on a regular basis can help prevent the spread of warts.
- Cleaning, common shower areas with dilute bleach and water or using soft scrub with bleach can be good preventative measures to prevent spread from individuals in the family.
Did you know?
Plantar warts can take several months to develop after exposure to the virus. Practicing good foot hygiene and avoiding direct contact with contaminated surfaces can help reduce your risk.
Take the Next Step Toward Healthy Feet
If you’re struggling with plantar warts in Phoenix, AZ, Valley Foot Care, Inc. is here to help. Our experienced podiatrists offer effective treatments to relieve discomfort and prevent future outbreaks. Don’t let plantar warts interfere with your daily activities—schedule an appointment today and get back on your feet!
Frequently Asked Questions
Yes, plantar warts are caused by HPV, which is highly contagious. They can spread through direct contact with an infected surface or person.
Cryotherapy or surgical removal are the most effective ways to remove a plantar wart quickly. However, non-surgical treatments like salicylic acid may take several weeks for the wart to resolve.
You can get plantar warts from direct contact with HPV, which thrives in warm, moist environments like public swimming pools or locker rooms.
If left untreated, plantar warts can grow larger, spread to other areas of the foot, and become more painful. In rare cases, they may lead to secondary infections.
No, filing a plantar wart can cause injury to the surrounding skin and increase the risk of spreading the virus. It’s best to seek professional treatment from a podiatrist.
Plantar warts are caused by the HPV virus, not by nutritional deficiencies. However, a weakened immune system may make you more susceptible to developing warts.
While some home remedies, like the duct tape method, may work for small warts, professional treatment is recommended for larger or persistent warts to avoid complications.
Yes, scratching or picking at a plantar wart can cause the virus to spread to other areas of your foot or to other people.
Most patients recover within 2–4 weeks, but healing time can vary based on the type of surgery performed and the size of the wart.
There’s a chance that plantar warts can recur, especially if the HPV virus is still present in the skin. However, proper treatment and prevention can reduce the likelihood of recurrence.
