Read below about black or brown knee bump, including causes and common questions. Or get a personalized analysis of your black or brown knee bump from our A.I. health assistant. At Buoy, we build tools that help you know what’s wrong right now and how to get the right care.

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A.I. Health Assistant Causes for Black or Brown Knee Bump

The list below shows results from the use of our A.I. Health Assistant by Buoy users who experienced black or brown knee bump. This list does not constitute medical advice.

  1. 1.Wart

    Warts are non-serious skin growths caused by a virus that infects the top layer of the skin. They are contagious. Thus, warts on the face are often spread there by the hands, and vice versa.

    78% go away in 2 years

    Rarity:
    Common
    Top Symptoms:
    small facial lump, painless facial bump, skin-colored facial bump, scaly facial bump
    Symptoms that never occur with wart:
    headache
    Urgency:
    Self-treatment
  2. 2.Skin Abscess

    A skin abscess is an infection of the deeper skin that's typically due to bacteria seen on the skin. Recently, infections are more frequently caused by Staph. Aureus (puts the "staph" in "staph infections"), which is dangerous and requires treatment.

    Good prognosis with treatment

    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
  3. 3.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.

    Blackheads should go away within the next 3-4 days

    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
  4. 4.Mole on the Knee

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

    Indefinite

    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 Checker

    Take a quiz to find out why you’re having black or brown knee bump.

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  5. 5.Dermatofibroma

    Dermatofibroma (superficial benign fibrous histiocytoma) is a common cutaneous nodule of unknown etiology that occurs more often in women. Dermatofibroma frequently develops on the extremities (mostly the lower legs) and is usually asymptomatic, although pruritus and tenderness can be present

    Resolves with treatment

    Rarity:
    Rare
    Top Symptoms:
    small facial lump, pink or red facial bump, face itch, skin-colored facial bump, painful facial bump
    Urgency:
    Wait and watch
  6. 6.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."

    Indefinite

    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
  7. 7.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.

    Indefinite

    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
  8. 8.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.

    Resolves with removal

    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

  • Q.Is the border of the bump round or are there jagged edges?
  • Q.Is the bump one single shade of black/brown or a mix?
  • Q.Is your bump getting bigger?
  • Q.Do you feel pain when you touch the bump?

If you've answered yes to one or more of these questions, try our black or brown knee bump symptom checker to find out more.

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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 had symptoms persist for:

    • 39% Over a Month
    • 25% Less Than a Week
    • 15% Less Than a Day
  • People who have experienced black or brown knee bump were most often matched with:

    • 66% Skin Abscess
    • 16% Wart
    • 16% Blackhead
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

A.I. Health Assistant

Take a quiz to find out why you’re having black or brown knee bump

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