Black Spot On Foot

Black spots on the foot are plantar warts, named after the part of the body they show up on — the bottom of the foot. Plantar warts are singular and small, but they can grow in clusters called mosaic warts. One distinguishing feature is the small black spot that appears on the wart, referred to as seeds.

What is a black spot on the foot?

Plantar warts develop on the ball or the heel of the foot. At the center of the wart are black spots, these capillaries supply the blood. Both the wart and the black spots may be unsightly, creating discomfort, but they are not harmful. Individuals experience minor irritation or pain, depending on where the wart is on the foot.

These black spots are non-cancerous growths in the top layer of the skin. Although they are not dangerous to our health, they are contagious. They can be spread with skin-to-skin or surface contact. Children playing at the playground may come in contact with each other or touch a contaminated surface.

• Consider limiting where and when you walk barefoot.

The risks are rare for a healthy person, but they exist. Risks increase for individuals with weakened immune systems. If you have a history of plantar warts, your risks of recurring incidents are higher.

What causes a black spot on the foot?

The cause is a strain of the human papillomavirus (HPV), entering the body through small cuts or lesions on the bottom of the foot. This strain is not the same virus associated with genital warts. This virus speeds up the growth of skin cells, developing a hard skin cover. Sometimes plantar warts are confused with a callus until the black spot on the foot appears.

The pressure from standing or walking can cause warts to grow inward. Our immune system is prepared to fight these growths, so if the pain is bearable, they will disappear. The HPV virus can lay dormant for years and something will trigger it — causing a recurrence. Even after the condition is treated, the virus may stay in your body and erupt again with no warning.

If the pain persists, or redness and swelling develop, you need to see the doctor. It’s not a good idea to self-treat the condition. You could prompt more serious problems if an infection exists. Foot conditions can be related to heredity or a sign of another more threatening health condition.

Symptoms of black spots on the foot

Depending on the severity of the growth, you may notice a change in your normal stance while standing or walking. If you ignore the condition, it could cause muscle or joint issues. In some cases, the symptoms go undetected.

  • Black spot on the foot
  • Pain or tenderness when walking or standing
  • Thickened skin, like a callus

If the wart has spread to other areas — contact the doctor. The doctor needs to see the area to decide how much of wart has grown below the skin’s surface. Once the examination is completed, the doctor will determine the best form of treatment.

It’s rare, but there are times when the wart is misdiagnosis – never self-diagnosis health events. Make an appointment to see the doctor if any of these conditions exist.

  • You want the wart removed
  • The wart is growing larger
  • Treatment didn't remove the wart
  • Warts reappear shortly after treatment

How to treat black spots on the foot

There are home treatments, over-the-counter (OTC) medications and professional services. Curing this condition is difficult. The challenge in treating this disorder is due to the wart growing below the surface of the skin.

There are effective methods to help manage and control the appearance of plantar warts leading to the black spots on the foot. One positive note, these warts have a life cycle of about 18 months.

Professional treatments involve a doctor's visit. These are non-invasive practices for treating plantar warts.

  • Topical medications
  • Peeling method using salicylic acid
  • Pads to soften the thickened skin and relive discomfort
  • Freezing the wart using liquid nitrogen
  • Laser therapy

Invasive treatment requires cutting or puncturing the skin. Your doctor will determine the best solution for you if other forms of treatment have failed.

  • Surgery
  • Medicine injections

Home Remedies

No matter which form of treatment you choose, remember this treatment is about your health. Trial and error at home can lead to more serious conditions or instigate unwanted ailments. Talk with your doctor first.

  • OTC medication may dissolve the wart
  • Duct tape may soften the wart

There are studies that tested the duct tape theory.

1. Place a piece of tape over the wart for six days
2. Then soak your foot in warm water and use a pumice to wear it down
3. It is necessary to repeat this process
4. Duct tape treatments could take up to 30 days to see a difference

Storage and Handling

Best health practices are good habits in the home when it comes to medications. Medications are used to restore and sustain our health, left unmonitored even the simplest form can cause harm.

  • Keep all medicines out of reach of children, elderly adults and animals.
  • Store medications in a cool, dry place away from direct heat or light.
  • Discard outdated or unused portions properly.


Methods of prevention to avoid foot infections or other health disorders are simple.

  • Wash your hands after touching your feet
  • Keep your feet clean and dry
  • Change your socks daily
  • Don’t pick at the black spot
  • Do not use a pumice stone or nail clipper on the wart without talking to the doctor.

Frequently asked questions

1. Is the black spot on foot contagious?
HPV virus is contagious and coming into contact with it will cause the condition to develop and spread. The virus thrives in heat and moisture and shared environments from playgrounds to gym showers.

2. Do I need to see a doctor?
In most cases, no. Plantar warts disappear on their own. If the condition persists and you notice swelling or a redness to the area – you may have an infection. Call your doctor.

3. If the first treatment doesn't work, now what?
Avoid using OTC treatments unless your doctor has prescribed it. Depending on the first response and your own health, the doctor will select the best series of treatment for you.

4. How is a black spot on foot transmitted?
The virus contributing to this condition is transmitted through direct contact with contaminated surfaces or skin-to-skin contact.

5. How long will it take to get results?
Everyone is different. For some, the wart will disappear during a two-year period. Freezing the wart takes two to four weeks to remove. The peeling method takes several weeks to months to see results.

6. How can I prevent black spots on the foot?
Cover your feet when in a shared community space like pools, recreational areas, college dorms and locker rooms. Keep your feet clean, change your socks daily. Wash your hands if you have contact with contaminated individuals or surfaces.

7. How common are black spots on the foot?
The foot condition is common among adolescents sharing communal showers or locker rooms. Overall, less than 1%of the American population reported an incident.