Read below about armpit lumps, including causes and common questions. Or get a personalized analysis of your armpit lumps 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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6 Potential Armpit Lumps 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.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 armpit bump, marble sized armpit lump, small armpit lump
    Symptoms that always occur with lipoma:
    skin-colored armpit bump
    Urgency:
    Wait and watch
  2. 2.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
  3. 3.Symptoms of Menopause

    Menopause is the point in life where your period stops. This happens when the ovaries stop making hormones that keep your cycle going. The transition into menopause is called peri-menopause and can include symptoms like hot flashes, shortening of menstrual cycle and mood fluctuations.

    Hot flashes typically peak approximately 1 year after the final period and last 4-10 years. Most women stop having hot flashes 4 years after they start, but 10% of women may have hot flashes up to 12 years after their last period.

    Rarity:
    Common
    Top Symptoms:
    fatigue, delay in or irregular periods, vaginal discharge, anxiety, trouble sleeping
    Symptoms that always occur with symptoms of menopause:
    delay in or irregular periods
    Urgency:
    Self-treatment

    Armpit Lumps Checker

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  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:
    skin-colored armpit bump, small armpit lump, scaly armpit bump
    Urgency:
    Self-treatment
  5. 5.Acute Lymphoblastic Leukemia

    Acute Lymphoblastic Leukemia (ALL) is a cancer of the white blood cells. This disease most commonly affects children between the ages of 2-5 years, and is a much more rare disease in adults. People with this disease get sick very rapidly. First, they feel fatigue and dizziness, and eventually the disease leads to bone marrow failure.

    Prognosis is highly variable and dependent on the individual, so a consultation from an oncologist is required.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, loss of appetite, shortness of breath, fever, severe fatigue
    Symptoms that never occur with acute lymphoblastic leukemia:
    inflamed throat
    Urgency:
    In-person visit
  6. 6.Sarcoidosis

    Sarcoidosis is an inflammatory disease that most often affects the lungs and skin, but can als affect the joints.

    This condition has a broad range of severity. It often goes away on its own over time but some cases can cause permanent damage.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, headache, shortness of breath, loss of appetite, joint pain
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Armpit Lumps

  • Q.What color is the bump?
  • Q.Any fever today or during the last week?
  • Q.Do you have a rash?
  • Q.Do you feel pain when you touch the bump?

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

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Armpit Lumps Symptom Checker Statistics

  • People who have experienced armpit lumps have also experienced:

    • 9% Painful Armpit Lump
    • 5% Armpit Pain
    • 3% Armpit Lump
  • People who have experienced armpit lumps had symptoms persist for:

    • 43% Less Than a Week
    • 22% Over a Month
    • 13% Less Than a Day
  • People who have experienced armpit lumps were most often matched with:

    • 44% Skin Cyst
    • 38% Lipoma
  • 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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