Understanding Plantar Warts
Plantar warts are typically harmless growths or bumps found on the skin, commonly appearing on the feet, especially the soles. They are caused by the human papillomavirus (HPV). While they often resolve on their own, this process can take a significant amount of time, potentially a year or two in children and even longer in adults. If a quicker resolution is desired, or if self-care approaches have been unsuccessful, consulting a healthcare provider is recommended.
A healthcare provider usually diagnoses a plantar wart by visual examination or by carefully removing the top layer of the wart with a scalpel to check for the characteristic dots. These dots are actually tiny, clotted blood vessels.
Treatment Options for Plantar Warts
When self-care methods are insufficient, several treatment options are available, ranging from medical procedures to over-the-counter remedies.
Prescription and Professional Treatments
- Freezing Medicine (Cryotherapy): This procedure is performed in a clinic and involves applying liquid nitrogen to the wart using either a spray or a cotton swab. The extreme cold causes a blister to form around the wart, leading to the sloughing off of dead tissue within approximately a week. Cryotherapy can also stimulate the immune system to combat the viral cause of warts.
- Stronger Peeling Medicine (Salicylic Acid): Prescription-strength wart medications containing salicylic acid work by progressively removing the wart layer by layer. Your healthcare provider will likely advise regular home application of the medication, supplemented by occasional office visits.
- Minor Surgery: In some cases, a healthcare provider may surgically remove the wart or destroy it using an electric needle (electrodesiccation and curettage). This method, while effective, can be painful, necessitating local anesthesia. Due to the risk of scarring, surgery is typically reserved for plantar warts that have not responded to other treatments.
- Blistering Medicine: A healthcare provider can apply cantharidin, a substance that induces the formation of a blister beneath the wart, lifting it from the skin.
- Immune Therapy: This approach utilizes medications or solutions to bolster the body's immune response against the wart-causing virus.
- Laser Treatment: Pulsed-dye laser treatment works by cauterizing the tiny blood vessels that feed the wart. The infected tissue then dies and the wart eventually falls off. This treatment often requires repeat sessions every 2 to 4 weeks.
Over-the-Counter and Home Remedies
Several options are available for home treatment, though their effectiveness may vary.
- Peeling Medicine (Salicylic Acid): Nonprescription wart removal products containing salicylic acid are available in various forms such as patches, gels, or liquids. The typical application involves washing the affected area, soaking it in warm water, gently removing the softened top layer of skin with a pumice stone or emery board, and then applying the medication after the skin has dried. Patches are usually changed every 24 to 48 hours, while liquid products are applied daily.
- Freezing Medicine (Cryotherapy): Over-the-counter products like Compound W Freeze Off® and Dr. Scholl's Freeze Away® utilize a freezing mechanism to remove warts. These kits typically contain a mixture of dimethyl ether and propane, which are less potent than the liquid nitrogen used in professional settings.
- Duct Tape: While considered a harmless approach, the effectiveness of duct tape for wart removal is not scientifically proven. The method involves covering the wart with silver duct tape, changing it every few days, and between applications, soaking the wart and gently debriding dead tissue.
How to Use Your Dr. Scholl's® Skin Tag Complete Care
Using Compound W Freeze Off®: A Detailed Guide
Compound W Freeze Off® is a popular over-the-counter product designed for at-home wart removal. It utilizes a cryotherapy method to freeze and eliminate plantar warts.
Preparation and Application
Before using Compound W Freeze Off®, it is important to prepare the affected area:
- Soak the foot with the plantar wart in warm water for 5 minutes.
- Dry the area thoroughly.
- Gently file the plantar wart area with a pumice stone or pumice file before applying the product.
Step-by-Step Instructions for Compound W Freeze Off®
- Attach the applicator (stick with the foam tip) to the handle. Firmly press the stick into the opening in the middle of the handle.
- Place the aerosol can firmly on a covered table or other sturdy surface. Caution! Do not hold the spray can near your face, or over parts of your body or clothing.
- Insert the handle, with the applicator attached, into the top of the canister, aligning the notches in the handle with the openings in the top of the canister.
- Keeping the canister upright and holding it firmly with one hand, press the handle downward until a hissing sound is heard. Continue to hold down for 2 to 3 seconds to saturate the applicator. A hissing sound should be audible throughout this period.
- After releasing the handle, wait 30 seconds, then remove the handle with the attached applicator from the canister. The foam applicator should appear frosty and saturated with cold liquid. Some dimethyl ether odor may be noticeable.
- Immediately apply the foam applicator to the wart to be frozen. Lightly press the applicator onto the wart for a specific duration depending on the location and thickness of the skin:
- For plantar warts on thicker or calloused skin (e.g., ball of the foot, heel): Hold for 40 seconds or less.
- For plantar warts on less calloused areas (e.g., arch, toes): Hold for 20 seconds or less.
- When treating warts on the top of toes, slowly move the toes during application.
- An aching, itching, or stinging sensation may be experienced during treatment.
- Discard the foam applicator after a single use. Avoid touching the applicator with bare hands to prevent re-infection. Wash hands thoroughly after treatment.
Important Safety Precautions and Warnings for Compound W Freeze Off®
Compound W Freeze Off® is an effective product, but it is crucial to adhere to all safety guidelines to prevent injury and ensure proper use.
General Warnings:
- Extremely Flammable: Content is under pressure. Keep away from fire, flames, sparks, and sources of ignition, including mobile phones and other electrical appliances. Do not smoke while using the product.
- Pressurized Canister: Do not pierce or burn the aerosol spray can, even after use. Doing so can cause the container to explode, leading to serious injury.
- Temperature Sensitivity: Protect all components from sunlight and do not expose to temperatures above 120° F (50° C). Store all components at room temperature away from heat.
- Readability: Do not use if you cannot clearly see the wart you are treating or if the information on the container or leaflet is unreadable.
- Use as Directed: Use only as directed. Misapplication can lead to serious burns and permanent scarring.
Specific Contraindications and Precautions:
- Children Under 4: Do not use on children under the age of 4 years, as it may cause permanent scarring of their skin.
- Diabetes and Poor Circulation: Individuals with diabetes or poor blood circulation should not use this product, as the frozen area may not heal properly or as quickly.
- Pregnancy and Breastfeeding: It is uncertain how Compound W Freeze Off® may affect pregnant or breastfeeding individuals.
- Sensitive Skin Areas: Do not use on areas with thin skin, such as the face, armpits, breasts, bottom, or genitals, as this may cause burns and permanent scarring.
- Irritated or Infected Skin: Do not use on irritated, infected, reddened, or inflamed skin (showing signs like itching or swelling). Treating such areas may worsen the condition and lead to further infection. These conditions may not be warts and require medical examination.
- Specific Wart Types and Locations: Do not use on moles, birthmarks, warts with hair growing from them, genital warts, or warts on the face or mucous membranes (mouth, nose, anus, genitals, lips, ears, or near eyes). Use in these areas can cause severe burns, permanent scarring, or blindness.
- Consult a Doctor: If you are unsure about the condition or its treatment, consult your doctor. Delaying proper treatment for a non-wart condition can lead to a more serious skin problem.
- Eye Contact: Avoid contact with eyes, as it can cause blindness. If contact occurs, flush eyes with water for 15 minutes and seek immediate medical help. Do not rub or touch eyes with hands after application.
- Ingestion: The content is toxic if swallowed and can cause serious internal damage.
Device Malfunction:
Be aware of potential device malfunctions:
- Do not use if the cone is stuck in position "1" after activation.
- If you do not hear the "hissing" sound during activation, or if it continues after activation, the device may not be functioning properly.
- If the metal tip does not become cold or an "icy surface" is not visible after activation, the device may be faulty.
Failure of the device can lead to injury or incomplete treatment. The metal tip is coated with nickel, which may cause allergic reactions.
Hygiene and Re-treatment:
- If the device is used by more than one person, or after each application, clean the applicator with alcohol on a cloth.
- Do not treat each wart with this product more than three times in total.
Preparing for Your Appointment
If self-treatment is unsuccessful or if you are uncertain about the diagnosis, begin by consulting your primary care provider. They may refer you to a specialist, such as a dermatologist (skin specialist) or a podiatrist (foot specialist).
When preparing for your appointment, consider the following:
- Have you tried any home remedies?
- If pressure on the wart causes pain, consider wearing well-cushioned shoes, such as athletic shoes, that provide even sole support to relieve pressure.
Cryotherapy: Professional vs. Over-the-Counter
Cryotherapy, the freezing of warts, is a widely used treatment. While professional cryotherapy often involves liquid nitrogen applied by a doctor, over-the-counter kits use less potent freezing agents.
Professional Cryotherapy
In a doctor's office, liquid nitrogen, which can reach temperatures as low as -320°F (-196°C), is typically used. The procedure may involve shaving off dead skin from the wart area and then applying liquid nitrogen with a cotton swab or a "cryogun" spray for a few seconds. This can cause discomfort, redness, or blistering. Multiple sessions may be required.
Over-the-Counter Cryotherapy Products
Products like Compound W Freeze Off® use a mixture of dimethyl ether and propane. While convenient, they are generally not as effective as professional treatments due to lower concentrations of the active freezing agents. Home application involves pressing the applicator onto the wart for a specified duration, typically 20-40 seconds depending on the location.
Understanding Wart Virus and Spread
Warts are caused by the human papillomavirus (HPV). They are contagious and can spread through direct skin-to-skin contact or by sharing contaminated objects such as towels. Picking at a wart and then touching another part of the body can also lead to the spread of the virus. Cryotherapy, by removing the infected tissue, can help reduce the viral load and lower the chance of warts spreading.
Potential Side Effects and Risks of Cryotherapy
While generally safe, cryotherapy can have side effects:
- Mild Side Effects: Blistering, scarring, mild skin irritation, redness, and temporary changes in skin color (hypopigmentation or hyperpigmentation) are common.
- More Serious Risks (Rare): Hair loss, numbness or tingling, ulcers, and infection can occur, particularly with prolonged freezing times or in individuals with poor circulation.
It is important to note that cryotherapy can remove genital warts but does not cure the HPV infection, meaning these warts can recur. Home freezing products should never be used on genital warts due to the risk of severe damage.
Conditions That May Contraindicate Freezing Treatment
Certain medical conditions may make freezing treatment inadvisable. It is essential to consult a doctor if you have any of the following:
- Cryoglobulinemia
- Multiple myeloma
- Raynaud's disease
- Urticaria (cold-induced hives)
These conditions can be exacerbated by cold exposure. Additionally, areas with poor blood circulation, such as in diabetic foot problems, should not be treated with cryotherapy, as it may damage tissues. A doctor should also confirm that a growth is not cancerous before proceeding with freezing treatment.
Aftercare Following Wart Treatment
Proper aftercare is crucial for healing and preventing complications:
- Do not pick at any blister that forms, as this can lead to scarring. A bandage can be used for protection if the area is draining.
- Avoid prolonged sun exposure until the area has healed. Use sunscreen afterward to minimize scarring.
- Refrain from using scented soaps, makeup, or lotions until the treated spot has healed. If crusting occurs, apply Vaseline or Aquaphor until the crust falls off.
- Wash the treated area daily with mild soap and water. If a blister or scab is present, dry the area well and cover it with a bandage. If the blister has broken or the scab has fallen off, dry the area well and apply an antibiotic ointment.
- Pain relief can be achieved with acetaminophen (Tylenol®) or ibuprofen (Advil® or Motrin®) as needed, following dosage instructions.
