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Warts
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Warts: Types and Treatment

Types of Warts
How Warts Occur
Common Wart Treatments
Other Treatment Options
Recurring Warts

Warts are non-cancerous skin growths caused by a viral infection in the top layer of the skin. Viruses that cause warts are called human papillomavirus (HPV). Warts are usually skin-colored and feel rough to the touch, but they can be dark, flat and smooth. The appearance of a wart depends on where it is growing.

How To: Treat Warts with Water’s Edge Dermatology

Watch a video on How to Treat Warts

Types of Warts

There are several different types of warts including:

COMMON WARTS

Common warts usually grow on the fingers, around the nails and on the backs of the hands. They are more common where skin has been broken, for example where fingernails are bitten or hangnails picked. These are often called “seed” warts because the blood vessels to the wart produce black dots that look like seeds.

FOOT / PLANTAR WARTS

Foot warts are usually on the soles (plantar area) of the feet and are called plantar warts. When plantar warts grow in clusters they are known as mosaic warts. Most plantar warts do not stick up above the surface like common warts because the pressure of walking flattens them and pushes them back into the skin. Like common warts, these warts may have black dots. Plantar warts can be painful, feeling like a stone in a shoe.

FLAT WARTS

Flat warts are smaller and smoother than other warts. They tend to grow in large numbers – 20 to 100 at any one time. They can occur anywhere, but in children they are most common on the face. In adults they are often found in the beard area in men and on the legs in women. Irritation from shaving probably accounts for this.

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How Warts Occur

Warts are caused by viruses and are passed from person to person, sometimes indirectly through touching an object someone with a wart has touched. The time from the first contact to the time the warts have grown large enough to be seen is often several months. The risk of catching hand, foot, or flat warts from another person is small.

Some people get warts depending on how often they are exposed to the virus. Wart viruses occur more easily if the skin has been damaged in some way, which explains the high frequency of warts in children who bite their nails or pick at hangnails. Some people are just more likely to catch the wart virus than are others, just as some people catch colds very easily. Patients with a weakened immune system also are more prone to a wart virus infection.

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Common Wart Treatments

In children, warts can disappear without treatment over a period of several months to years. However, warts that are bothersome, painful, or rapidly multiplying should be treated. Warts in adults often do not disappear as easily or as quickly as they do in children.

Water’s Edge  practitioners are trained to use a variety of treatments, depending on the age of the patient and the type of wart.

COMMON WARTS

Common warts in young children can be treated at home by their parents on a daily basis by applying salicylic acid gel, solution, or plaster. There is usually little discomfort but it can take many weeks of treatment to obtain favorable results. Treatment should be stopped at least temporarily if the wart becomes sore.

Warts may also be treated by “painting” with cantharidin in the Water’s Edge Dermatology practitioner’s office. Cantharidin causes a blister to form under the wart. Your Water’s Edge Dermatology practitioner can then clip away the dead part of the wart in the blister roof in a week or so.

For adults and older children cryotherapy (freezing) is generally preferred. This treatment is not too painful and rarely results in scarring. However, repeat treatments at one to three week intervals are often necessary.

Electrosurgery (burning) is another good alternative treatment. Laser treatment can also be used for resistant warts that have not responded to other therapies.

FOOT / PLANTAR WARTS

Foot warts are difficult to treat because the bulk of the wart lies below the skin surface. Treatments include the use of salicylic acid plasters, applying other chemicals to the wart, or one of the surgical treatments including laser surgery, electrosurgery, or cutting.

Your Water’s Edge Dermatology practitioner may recommend a change in footwear to reduce pressure on the wart and ways to keep the foot dry since moisture tends to allow warts to spread.

FLAT WARTS

Flat warts are often too numerous to treat with methods mentioned above. As a result, “peeling” methods using daily applications of salicylic acid, tretinoin, glycolic acid or other surface peeling preparations are often recommended. For some adults, periodic office treatments for surgical treatments are sometimes necessary.

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Other Wart Treatments

There are several different lasers used for the treatment of warts. Laser therapy is used to destroy some types of warts. Lasers are more expensive and require the injection of a local anesthesia to numb the area treated.

Another treatment is to inject each wart with an anti-cancer drug called bleomycin. The injections may be painful and can have other side effects.

Immunotherapy, which attempts to use the body’s own rejection system, is another method of treatment. Several methods of immunotherapy are being used. With one method, the patient is made allergic to a certain chemical which is then painted on the wart. A mild allergic reaction occurs around the treated warts, and may result in the disappearance of the warts.

Warts may also be injected with interferon, a treatment to boost the immune reaction and cause rejection of the wart.

CAN I TREAT MY OWN WARTS WITHOUT SEEING A DOCTOR?

There are some wart remedies available without a prescription. However, you might mistake another kind of skin growth for a wart, and end up treating something more serious as though it were a wart. If you have any questions about either the diagnosis or the best way to treat a wart, you should seek the advice of your Water’s Edge Dermatology practitioner.

WHAT ABOUT THE USE OF HYPNOSIS OR FOLK REMEDIES?

Many people – patients and doctors alike – believe folk remedies and hypnosis are effective. Since warts, especially in children, may disappear without treatment, it’s hard to know whether it was a folk remedy or just the passage of time that led to the cure. Since warts are generally harmless, there may be times when these treatments are appropriate. Medical treatments can always be used if necessary.

IS THERE ANY RESEARCH GOING ON ABOUT WARTS?

Research is moving along very rapidly. There is great interest in new treatments, as well as the development of a vaccine against warts. We hope there will be a solution to the problem of warts in the not-too-distant future.

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Recurring Warts

Sometimes it seems as if new warts appear as fast as old ones go away. This may happen because the old warts have shed virus into the surrounding skin before they were treated. In reality, new “baby” warts are growing up around the original “mother” warts.

The best way to limit this is to treat new warts as quickly as they develop so they have little time to shed virus into nearby skin. A check by your Water’s Edge Dermatology practitioner can help assure the treated wart has resolved completely.

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Water’s Edge Dermatology is a leading full service dermatology practice providing medical dermatology, surgical dermatology, pediatric dermatology, cosmetic dermatology, skin cancer treatment, and plastic surgery, and Vein Centers. Water’s Edge Dermatology has 37 office locations throughout Florida.

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