Read below about painless arm bump, including causes and common questions. Or get a personalized analysis of your painless arm 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 Painless Arm Bump

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

  1. 1.Lipoma

    A lipoma is a noncancerous growth of fatty tissue cells. A lipoma can develop in almost any organ of the body although they are most commonly found in the subcutaneous layer just below the skin.

    Resolves with treatment

    Rarity:
    Uncommon
    Top Symptoms:
    skin-colored groin bump, marble sized groin lump, small groin lump
    Symptoms that always occur with lipoma:
    skin-colored groin bump
    Urgency:
    Wait and watch
  2. 2.Basal Cell Carcinoma

    Basal cell carcinoma is a slow-growing form of skin cancer. Skin cancer falls into two major groups: Non-melanoma and melanoma. Basal cell carcinoma is a type of non-melanoma skin cancer.

    Indefinite

    Rarity:
    Uncommon
    Top Symptoms:
    facial skin changes, pink or red facial bump, small facial lump, painless facial bump, growing facial lump
    Urgency:
    Primary care doctor

    Painless Arm Bump Checker

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  3. 3.Skin Cyst

    An epidermoid cyst is a closed sac under the skin filled with a cheese-like or oily material. It is caused by trauma or surgery.

    Resolves with treatment

    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
  4. 4.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

Questions Your Doctor May Ask About Painless Arm Bump

  • Q.What color is the bump?
  • Q.Is there anything on the surface of the bump?
  • Q.Do you have a rash?
  • Q.Any fever today or during the last week?

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

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Painless Arm Bump Symptom Checker Statistics

  • People who have experienced painless arm bump have also experienced:

    • 9% Pain in the Upper Arm
    • 4% Upper Arm Bruise
    • 4% Muscle Aches
  • People who have experienced painless arm bump had symptoms persist for:

    • 32% Over a Month
    • 31% Less Than a Week
    • 17% Less Than a Day
  • People who have experienced painless arm bump were most often matched with:

    • 100% Basal Cell Carcinoma
  • 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

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