Black or Brown Knee Bump Symptoms, Causes & Common Questions

Understand your black or brown knee bump symptoms, including 8 causes and common questions.

Black Or Brown Knee Bump Symptom Checker

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Contents

  1. 8 Possible Black Or Brown Knee Bump Causes
  2. Questions Your Doctor May Ask
  3. Statistics
  4. Related Articles

8 Possible Black Or Brown Knee Bump Causes

The list below shows results from the use of our quiz by Buoy users who experienced black or brown knee 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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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

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

Mole on the knee

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

Rarity: Uncommon

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

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

Urgency: Wait and watch

Black Or Brown Knee Bump Symptom Checker

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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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Melanoma

Melanoma is the most serious type of skin cancer. Often the first sign of melanoma is a change in the size, shape, color, or feel of a mole. Most melanomas have a black or black-blue area. Melanoma may also appear as a new mole. It may be black, abnormal, or "ugly looking."

Rarity: Rare

Top Symptoms: brown-colored skin changes, atypical features of a facial bump, black-colored skin changes, growing facial lump, large facial lump

Symptoms that always occur with melanoma: atypical features of a facial bump

Urgency: Primary care doctor

Atypical mole

Moles are growths on the skin. They happen when pigment cells in the skin, called melanocytes, grow in clusters. Certain moles are considered "atypical" because of their size and characteristics, which require careful watching and possibly even biopsy in order to monitor for development into cancer.

Rarity: Uncommon

Top Symptoms: severe abdominal lump, brown-colored skin changes, moderate abdominal lump, atypical abdominal bump features, growing abdominal bump

Symptoms that always occur with atypical mole: black or brown abdominal bump, atypical abdominal bump features

Urgency: Primary care doctor

Mole present at birth (congenital nevus)

A Congenital Nevus is a mole that is present from birth. It is associated with higher risk of melanoma.

Rarity: Ultra rare

Top Symptoms: existing mole, new or changing mole, mole that has been around since birth, uniformly colored mole, mole that is the same size or larger than a pencil eraser

Symptoms that always occur with mole present at birth (congenital nevus): existing mole, mole that has been around since birth

Urgency: Primary care doctor

Questions Your Doctor May Ask About Black Or Brown Knee 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 one single shade of black/brown or a mix?
  • Is your bump getting bigger?
  • Do you feel pain when you touch the bump?

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 knee bump. These questions are also covered.

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Black Or Brown Knee Bump Symptom Checker Statistics

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

  • 14% Pain In The Outside Of The Knee
  • 14% Pain In The Lower Left Abdomen
  • 14% Knee Stiffness

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

  • 66% Skin Abscess
  • 16% Wart
  • 16% Blackhead

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

  • 39% Over a month
  • 25% Less than a week
  • 15% Less than a day

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

Black Or Brown Knee Bump Symptom Checker

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