Callus or Wart: Your Foot Skin Issues - Dermatology

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Is it a cocoon or a chrysalis?


Hello, Doctor.
I have a question.
I used to wear high-heeled shoes, but for the past year, I have switched to flat shoes.
I have a tendency to develop cracks on the soles of my feet.
About six months ago, I noticed a small, 0.2 cm hard bump on the heel of my left foot, about three centimeters from the back.
It looks white on the surface and resembles a callus, but it doesn’t hurt.
Recently, I developed another bump that is about 0.1 cm and also looks like a callus.
Additionally, there is a bump about 0.1 cm between my big toe and second toe.
All three bumps have a similar appearance, slightly white, and feel hard to the touch, resembling calluses with distinct round outlines.
A couple of days ago, I visited a dermatologist who diagnosed it as a wart and sprayed something on it, which was very painful.
They also instructed me to buy a topical medication, which also caused a stinging sensation when applied.
I would like to know if this is indeed a wart or just calluses.
Should I visit a larger hospital for a dermatology consultation? If it is not a wart and I have applied wart medication, could that cause any harm? Additionally, I have a soft, skin-colored bump about 0.3 cm next to my little finger, which I trimmed yesterday, and now it looks like a scar.
Is that a concern?

Wenwen, 40~49 year old female. Ask Date: 2018/09/14

Dr. Li Yufen reply Dermatology


Hello: Based solely on the textual description, it is not possible to definitively diagnose whether it is a viral wart or a corn/callus-related keratotic lesion.
For differential diagnosis between viral warts and corns, you can refer to the article on the Dermatology Expert Health Network at http://www.drskincare.com.tw/Qa/Detail.aspx?ID=63.
If the skin symptoms do not improve or worsen, it is recommended to consult a nearby dermatologist for diagnosis and treatment at http://www.derma.org.tw/user_finddoctor.php.
Thank you!

Reply Date: 2018/09/14

More Info


When it comes to foot skin issues such as calluses and warts, it's essential to understand the differences between these conditions and how to address them effectively. Based on your description, it sounds like you are dealing with a few different types of skin growths on your feet, and it’s important to differentiate between them to determine the best course of action.

Calluses are thickened areas of skin that develop in response to repeated friction or pressure. They often appear on the soles of the feet, particularly on the heels and balls of the feet, and are usually painless. The hard, thickened skin is the body’s way of protecting itself from irritation. In your case, the white, hard bumps you described could very well be calluses, especially since they are not painful and have a distinct, rounded shape.

On the other hand, warts are caused by the human papillomavirus (HPV) and can appear as rough, raised bumps on the skin. They may have a rough surface and can sometimes be painful, especially if located in areas that bear weight, such as the soles of your feet. Warts can also have tiny black dots in them, which are small blood vessels. The treatment for warts often involves topical medications, cryotherapy (freezing), or other methods to remove the wart.

From your description, it seems that you have been treated for a wart, as indicated by the painful spray and the medication prescribed by your dermatologist. If the growths on your feet are indeed warts, the treatment you received is appropriate. However, if they are calluses, the treatment may not be necessary, as calluses typically do not require medical intervention unless they become painful or bothersome.

Regarding your concern about the treatment you received and whether it could cause harm if the growths are not warts, it is generally safe to use wart treatments on calluses, but it may not be effective. If the treatment causes discomfort or if you notice any adverse reactions, it would be wise to consult with a healthcare provider again.
As for the soft, skin-colored bump you mentioned next to your little toe, it could be a variety of things, including a soft corn or a benign growth. If you have already trimmed it and it is healing without pain or signs of infection, it should be fine. However, if it changes in appearance, becomes painful, or does not heal, you should seek medical advice.

In summary, it is crucial to have a proper diagnosis to determine whether you are dealing with calluses, warts, or another skin condition. If you are uncertain about the diagnosis or the treatment you received, it may be beneficial to seek a second opinion from a dermatologist or a podiatrist who specializes in foot conditions. They can provide a thorough examination and recommend the most appropriate treatment based on your specific situation.
In the meantime, to manage calluses, consider using over-the-counter products designed to soften thickened skin, such as salicylic acid. Regularly moisturizing your feet and using protective pads in your shoes can also help prevent further irritation. If you suspect warts, avoid picking at them, as this can spread the virus. Instead, follow the treatment plan provided by your healthcare provider.

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