Black or Brown Leg Bump Symptoms, Causes & Common Questions

Understand your black or brown leg bump symptoms, including 7 causes and common questions.

Black Or Brown Leg Bump Symptom Checker

Take a quiz to find out what might be causing your black or brown leg bump

Contents

  1. 7 Possible Black Or Brown Leg Bump Causes
  2. Questions Your Doctor May Ask
  3. Statistics
  4. Related Articles

7 Possible Black Or Brown Leg Bump Causes

The list below shows results from the use of our quiz by Buoy users who experienced black or brown leg bump. This list does not constitute medical advice and may not accurately represent what you have.

Wart

Warts, also called common warts or verrucae, are small, rough, rounded growths on the top layer of the skin. They may appear alone or in clusters. Common warts are caused by the human papillomavirus (HPV) and are contagious through direct contact. They may spread from one place on the body to another simply through touch.

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Mole on the lower leg

Moles are growths on the skin. They happen when pigment cells in the skin, called melanocytes, grow in clusters.

Rarity: Uncommon

Top Symptoms: unchanged lower leg bump, black or brown leg bump, small lower leg lump, bump's smooth border, uniformly black/brown lower leg bump

Symptoms that always occur with mole on the lower leg: unchanged lower leg bump, black or brown leg bump

Urgency: Wait and watch

Blackhead

Blackheads are caused by hair follicles becoming clogged with oil & dead skin cells. When the clogged pore is open to the air, the air turns the outermost layer black through oxidation.

Rarity: Common

Top Symptoms: small facial lump, black or brown facial bump

Symptoms that always occur with blackhead: small facial lump, black or brown facial bump

Urgency: Self-treatment

Black Or Brown Leg Bump Symptom Checker

Take a quiz to find out what might be causing your black or brown leg bump

Dermatofibroma

A dermatofibroma is a common skin growth that usually appears on the lower legs, but may appear anywhere on the body. These growths are benign (noncancerous). Dermatofibromas are most common in adults and are rarely found in children.

Symptoms include a hard, raised growth that is red, pink, ...

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Skin cyst

A cyst is a small sac or lump, filled with fluid, air, fat, or other material, that begins to grow somewhere in the body for no apparent reason. A skin cyst is one that forms just beneath the skin.

It's believed that skin cysts form around trapped keratin cells – the cells that form the relatively tough outer layer of the skin.

These cysts are not contagious.

Anyone can get a skin cyst, but they are most common in those who are over age 18, have acne, or have injured the skin.

Symptoms include the appearance of a small, rounded lump under the skin. Cysts are normally painless unless infected, when they will be reddened and sore and contain pus.

Diagnosis is made through physical examination. A small cyst can be left alone, though if it is unsightly or large enough to interfere with movement it can be removed in a simple procedure done in a doctor's office. An infected cyst must be treated so that the infection does not spread.

Rarity: Common

Top Symptoms: skin-colored armpit bump, marble sized armpit lump, small armpit lump

Symptoms that always occur with skin cyst: skin-colored armpit bump

Urgency: Wait and watch

Skin abscess

A skin abscess is a large pocket of pus that has formed just beneath the skin. It is caused by bacteria getting under the skin, usually through a small cut or scratch, and beginning to multiply. The body fights the invasion with white blood cells, which kill some of the infected tissue but form pus within the cavity that remains.

Symptoms include a large, red, swollen, painful lump of pus anywhere on the body beneath the skin. There may be fever, chills, and body aches from the infection.

If not treated, there is the risk of an abscess enlarging, spreading, and causing serious illness.

Diagnosis is made through physical examination.

A small abscess may heal on its own, through the body's immune system. But some will need to be drained or lanced in a medical provider's office so that the pus can be cleaned out. Antibiotics are usually prescribed.

Keeping the skin clean, and using only clean clothes and towels, will help to make sure that the abscess does not recur.

Rarity: Common

Top Symptoms: rash with bumps or blisters, red rash, red skin bump larger than 1/2 cm in diameter, pus-filled rash, rash

Symptoms that always occur with skin abscess: rash with bumps or blisters

Urgency: Primary care doctor

Boil (furuncle)

A furuncle, also called a boil, is infection of a hair follicle. The infection forms under the skin at the root of the hair and may occur anywhere on the body.

The infection is caused by bacteria, most often Staphylococcus aureus or "staph." Irritation caused by clothes or anything else rubbing the skin can cause the skin to break down and allow bacteria to enter.

Staph bacteria are found everywhere. Frequent and thorough handwashing, and otherwise maintaining cleanliness, will help to prevent its spread.

Most susceptible are those with a weakened immune system; diabetes; and other skin infections.

Symptoms include a single bump under the skin that is swollen, painful, and red, and contains pus.

It is important to treat the boil, since infection can spread into the bloodstream and travel throughout the body.

Diagnosis is made through physical examination and sometimes fluid sample from the boil.

Treatment may involve incision and drainage of the infection, followed by creams to apply to the site of the boil and/or a course of antibiotic medicine.

Rarity: Uncommon

Top Symptoms: pink or red facial bump, small facial lump, painful facial bump, marble sized facial lump, constant skin changes

Symptoms that always occur with boil (furuncle): pink or red facial bump

Symptoms that never occur with boil (furuncle): fever

Urgency: Self-treatment

Questions Your Doctor May Ask About Black Or Brown Leg Bump

To diagnose this condition, your doctor would likely ask the following questions:

  • Is the border of the bump round or are there jagged edges?
  • Is the bump a single shade of black/brown or a mix?
  • Is your lower leg bump painful to touch?
  • Any fever today or during the last week?

If you've answered yes to one or more of these questions

Please take a quiz to find out what might be causing your black or brown leg bump. These questions are also covered.

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Black Or Brown Leg Bump Symptom Checker Statistics

People who have experienced black or brown leg bump have also experienced:

  • 10% Lower Leg Pain
  • 8% Upper Leg Bump
  • 6% Lower Leg Bump

People who have experienced black or brown leg bump were most often matched with:

  • 50% Wart
  • 50% Blackhead

People who have experienced black or brown leg bump had symptoms persist for:

  • 39% Over a month
  • 22% Less than a week
  • 14% Less than a day

Source: Aggregated and anonymized results from Buoy Assistant (a.k.a. the quiz).

Black Or Brown Leg Bump Symptom Checker

Take a quiz to find out what might be causing your black or brown leg bump