What Causes Warts?
Warts are caused by a strain of human papillomavirus (HPV). It often happens when you come into contact with HPV from others who have it. People with weakened immune systems are more prone to getting warts than others. You can contract HPV from shared towels, clothing, intercourse, and more. It may take a few months for the symptoms to appear.
Symptoms of Warts
- Rough bumps
- Black dots
- Can grow in clusters
- Can hurt
- Raised bumps
- Quick growth
Treatments for Warts
Warts may go away on their own given time. Some minor cases can be treated at home with salicylic acid. If you are experiencing persistent or more severe cases of warts, then an appointment with a dermatologist should be your next step. Top dermatologist, Dr. Krathen can help recommend the right wart removal treatment for you, which may include:
- Freezing (cryotherapy)
- Cantharadin (Plus) application
- Bleomycin injections
- Fluorouracil prescription therapy
If you have recurring warts, then Dr. Krathen may prescribe some topical medications to help your body fight off the infection.
Warts FAQs
Are warts harmful?
True warts are benign (not cancerous). However, they are highly contagious. They can also resemble potentially harmful conditions that require prompt and specialized care.
Do some skin cancers look like warts?
Yes. The two most common skin cancers, squamous cell carcinoma and basal cell carcinoma, can look similar to warts. They all may be raised, and feel rough or crusty. It is important to regularly visit our office for professional skin screenings. During these visits, we monitor for changes and can evaluate and accurately diagnose specific skin concerns.
How can I prevent warts?
You can protect against warts or recurrences by being vigilant about cleansing and covering up wounds. It’s important to keep your towels and other belongings isolated from others in public spaces; for instance, ensure that your towels do not come in contact with other individuals and their belongings. Always wear shoes, especially in public showers, pools, and other moist environments where HPV can thrive. Practice good handwashing hygiene, and refrain from biting your nails or cuticles as this habit can produce tiny tears in the skin that allow for HPV to break through.
How does Canthararidin Plus work to remove warts?
This solution is applied to the wart. It affects only the upper layers of the skin. So, it is not associated with scarring. As the product takes effect, it causes the wart to blister over in a safe, controlled fashion. Eventually, the blister dries out and sloughs off naturally along with the wart.
What is bleomycin?
When injected into the base of a common wart, this antiviral therapy damages the blood vessels that supply and sustain it. Also, bleomycin generally works by destroying HPV-infected cells. This treatment is highly targeted, and is not associated with a risk of scarring or damage to the lower layers of skin.
What makes fluoruracil a good treatment for warts?
Applied to the skin, this medication selectively targets infected skin cells. Slowing down the growth of these cells causes the infected tissue to begin to break down. Eventually, the wart will slough off. Since treatment is so selective, only the infected cells and tissue are damaged.
What can I expect from cryotherapy?
With cryotherapy, we freeze off the wart. This is a common treatment for warts. If it is an appropriate option for you, we carefully apply a very cold substance directly to the wart. This causes the wart to scab and fall off. As your skin heals (typically 4-7 days), it’s normal for the treated area to crust and blister.
What treatment is best for me?
Recommendations are based on what we find from a thorough evaluation of your wart. We may recommend one (or a combination) of different treatments after carefully considering the following factors:
- Location – For instance, plantar warts on the feet require different products and therapies than facial warts.
- Age – Children may not be appropriate candidates for injections or treatments that may not be tolerated as well.
- Response to OTC or home treatments – When these products do not get results, we may recommend in-office procedures like cryotherapy.
- The severity or persistence of warts – Complex or stubborn cases may require a combination home/in-office approach.
We also review your medical history and consider any underlying conditions or medications that you may be taking before developing a safe and effective treatment plan.
Schedule a Consultation
Dr. Krathen offers a range of wart treatments and combinations that can be suited to your unique situation. If you have warts and are seeking a remedy, then come into Essential Dermatology and talk with Dr. Krathen. To get started, call our office at (508) 545-9713 or request a consultation by filling out our online form. To book an appointment, schedule your visit as a new patient using our online scheduler or as an existing patient using the Mass General Brigham Patient Gateway.






