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Learn about your black or brown mass on hand, including causes and common questions. Or get a personalized analysis of your black or brown mass on hand 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.

Black or Brown Mass on Hand Checker

Take a quiz to find out why you’re having black or brown mass on hand.

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Your Black or Brown Mass on Hand May Also be Known as:
Black back of hand bump
Black back of hand bumps
Black back of hand lump
Black back of hand mass
Black bump on back of hand
Black bump on finger
Black bump on hand
Black bump on palm
Black bump on thumb
Black bump on wrist

Top 3 Black or Brown Mass on Hand Causes

  1. 1.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.

    You should go see your primary care doctor to examine the mole. He or she can determine if next steps are necessary.

    Rarity:
    Uncommon
    Top Symptoms:
    brown-colored skin changes, black-colored skin changes, atypical hand bump features, small hand lump, growing hand bump
    Symptoms that always occur with atypical mole:
    black or brown mass on hand, atypical hand bump features
    Urgency:
    Primary care doctor

    Black or Brown Mass on Hand Checker

    Take a quiz to find out why you’re having black or brown mass on hand.

    Take a quiz
  2. 2.Mole on the Hand

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

    If you have many moles that you are worried about, you can go see your primary care doctor to follow the moles. However, treatment is only considered if a new mole develops or changes.

    Rarity:
    Uncommon
    Top Symptoms:
    unchanged hand bump, small hand lump, bump's smooth border, uniformly black/brown bump, black or brown mass on hand
    Symptoms that always occur with mole on the hand:
    unchanged hand bump, black or brown mass on hand
    Urgency:
    Wait and watch
  3. 3.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

    You do not need treatment for this condition because it is completely benign; however, if the lesion changes at all, a doctor should be consulted. If you would like it removed, a doctor can cut, freeze, or burn it off.

    Rarity:
    Rare
    Top Symptoms:
    hand itch, small hand lump, painful hand lump, pink or red mass on hand, skin-colored hand bump
    Urgency:
    Wait and watch

Questions Your Doctor May Ask About Black or Brown Mass on Hand

  • Q.Compared to a marble, how big is this bump?
  • Q.How long have you had the bump?
  • Q.Any fever today or during the last week?
  • Q.Do you have a rash?

If you've answered yes to one or more of these questions, check our black or brown mass on hand symptom checker.

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Black or Brown Mass on Hand Symptom Checker Statistics

  • People who have experienced black or brown mass on hand had symptoms persist for:

    • 36% Over a Month
    • 29% Less Than a Week
    • 17% Less Than a Day
  • People who have experienced black or brown mass on hand were most often matched with:

    • 20% Atypical Mole
    • 6% Mole on the Hand

Black or Brown Mass on Hand Checker

Take a quiz to find out why you’re having black or brown mass on hand.

Take a quiz