Read below about back bump, including causes and common questions. Or get a personalized analysis of your back 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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10 Potential Back Bump Causes

Disclaimer: The article does not replace an evaluation by a physician. Information on this page is provided as an information resource only, and is not to be used or relied on for any diagnostic or treatment purposes.

  1. 1.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 back bump, marble sized back lump, small back lump
    Symptoms that always occur with skin cyst:
    skin-colored back bump
    Urgency:
    Wait and watch
  2. 2.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 back bump, marble sized back lump, small back lump
    Symptoms that always occur with lipoma:
    skin-colored back bump
    Urgency:
    Wait and watch
  3. 3.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").

    Good prognosis with treatment

    Rarity:
    Common
    Top Symptoms:
    painful back lump, large back lump, marble sized back lump, pink or red back bump, back bump leaking yellow/milky fluid
    Symptoms that never occur with skin abscess:
    fever
    Urgency:
    Primary care doctor
  4. 4.Wart

    Warts are non-serious skin growths caused by a virus that infects the top layer of the skin. They are contagious.

    78% go away in 2 years

    Rarity:
    Common
    Top Symptoms:
    painless back bump, skin-colored back bump, small back lump, scaly back bump, back pain
    Symptoms that never occur with wart:
    back pain
    Urgency:
    Self-treatment
  5. 5.Pimple

    Acne, also known as pimples, occurs when hair follicles become clogged with oil & dead skin cells. Acne is extremely common and ranges from mild to severe.

    The severity of the acne dictates treatment-type and duration. With proper treatment, acne should resolve in weeks to months. In some cases, acne is a long-term condition.

    Rarity:
    Common
    Top Symptoms:
    pink or red back bump, painful back lump, marble sized back lump, small back lump
    Symptoms that always occur with pimple:
    pink or red back bump
    Urgency:
    Self-treatment

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  6. 6.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:
    back itch, skin-colored back bump, painful back lump, marble sized back lump, small back lump
    Urgency:
    Wait and watch
  7. 7.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:
    skin-colored back bump, painless back bump, growing back bump, marble sized back lump, pink or red back bump
    Urgency:
    Primary care doctor
  8. 8.Boil (Furuncle)

    Boils are infections of a hair follicle that creates a small pocket of inflammation full of pus. It's typically caused by a common bacteria called S. Aureus.

    5-10 days

    Rarity:
    Uncommon
    Top Symptoms:
    pink or red back bump, painful back lump, marble sized back lump, small back lump
    Symptoms that always occur with boil (furuncle):
    pink or red back bump
    Symptoms that never occur with boil (furuncle):
    fever
    Urgency:
    Self-treatment
  9. 9.Severe 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"). If the infection begins to spread, urgent treatment is required.

    92-96% resolve with treatment within 7-10 days

    Rarity:
    Rare
    Top Symptoms:
    fatigue, fever, pink or red back bump, painful back lump, large back lump
    Symptoms that always occur with severe skin abscess:
    pink or red back bump, red bump
    Urgency:
    Hospital emergency room
  10. 10.Fibromyalgia

    Fibromyalgia is a disorder that causes widespread pain, tenderness, and fatigue.

    Fibromyalgia is generally a lifelong condition

    Rarity:
    Common
    Top Symptoms:
    fatigue, arthralgias or myalgias, anxiety, depressed mood, headache
    Symptoms that always occur with fibromyalgia:
    arthralgias or myalgias
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Back Bump

  • Q.What color is the bump?
  • Q.Do you feel pain when you touch the bump?
  • Q.Do you purposely tan (using sun, tanning beds, or UV rays)?
  • Q.Has anyone in your family had cancer?

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

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Back Bump Symptom Checker Statistics

  • People who have experienced back bump have also experienced:

    • 13% Lower Back Pain
    • 12% Back Pain
    • 1% Fatigue
  • People who have experienced back bump had symptoms persist for:

    • 49% Over a Month
    • 21% Less Than a Week
    • 11% Less Than a Day
  • People who have experienced back bump were most often matched with:

    • 39% Skin Cyst
    • 35% Lipoma
    • 24% Skin Abscess
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

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