Read below about asymmetrical breasts, including causes and common questions. Or get a personalized analysis of your asymmetrical breasts 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.

This symptom can also be referred to as:
One breast is larger than the other

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A.I. Health Assistant Causes for Asymmetrical Breasts

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

  1. 1.Breast Infection (Mastitis)

    Mastitis is an infection of the breast tissue that results in breast pain, swelling, warmth and redness of the breast. Mastitis most commonly affects women who are breast-feeding (lactation mastitis), although sometimes this condition can occur in women who aren't breast-feeding.

    2-3 weeks with treatment

    Rarity:
    Uncommon
    Top Symptoms:
    fatigue, nausea, breast pain, signs of breast inflammation like redness, swelling or fever, fever
    Symptoms that always occur with breast infection (mastitis):
    breast pain, signs of breast inflammation like redness, swelling or fever
    Urgency:
    Primary care doctor
  2. 2.Breast Cyst

    A breast cyst is a fluid-filled sac (like a tiny balloon) inside the breast. Breast cysts are common in women. They might cause a little pain, but they are usually benign (not cancerous).

    Resolves with treatment but can recur

    Rarity:
    Common
    Top Symptoms:
    breast pain, breast lump, painful breast lump, movable breast lump
    Symptoms that always occur with breast cyst:
    breast lump
    Symptoms that never occur with breast cyst:
    armpit lump, fever
    Urgency:
    Primary care doctor
  3. 3.Breast Abscess

    A breast infection is an infection in the tissue of the breast. Breast infections are usually caused by a common bacteria, Staphylococcus aureus, found on normal skin.

    2-3 weeks with treatment

    Rarity:
    Rare
    Top Symptoms:
    nausea, breast pain, signs of breast inflammation like redness, swelling or fever, fever, chills
    Symptoms that always occur with breast abscess:
    breast pain, signs of breast inflammation like redness, swelling or fever
    Urgency:
    Primary care doctor

    Asymmetrical Breasts Checker

    Take a quiz to find out why you’re having asymmetrical breasts.

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  4. 4.Scoliosis

    Scoliosis causes a sideways curve of your backbone, or spine. Scoliosis is most common in late childhood and the early teens, when children grow fast.

    Chronic, but curable

    Rarity:
    Common
    Top Symptoms:
    spontaneous back pain, shortness of breath on exertion, asymmetrical shoulders, asymmetrical breasts, back deformity
    Urgency:
    Wait and watch
  5. 5.Breast Cancer

    Breast cancer affects one in eight women during their lives. It is caused by uncontrolled and fast growth of damaged cells in the breast tissue. These cells can also move to the lymph nodes and sometimes other organs. The main symptom of breast cancer is a hard or firm, non-mobile, usually non-tender lump in the breast that increases in size.

    Indefinite

    Rarity:
    Uncommon
    Top Symptoms:
    breast pain, armpit lump, breast mass or retraction, breast lump, nipple discharge
    Urgency:
    Primary care doctor
  6. 6.Fibrocystic Breast Changes

    Fibrocystic change is a generalized term used to describe a variety of benign changes in the breast. Symptoms of this condition are breast swelling or pain, as well as nodules, lumpiness, or nipple discharge.

    Relapsing, lasting years

    Rarity:
    Common
    Top Symptoms:
    breast lump, hard breast lump, nipple discharge, rope-like breast lump
    Symptoms that always occur with fibrocystic breast changes:
    breast lump
    Urgency:
    Primary care doctor
  7. 7.Intraductal Papilloma

    Breast problems such as lumps are very common and often not caused by breast cancer. An intraductal papilloma is such a benign breast lump situated in the milk ducts.

    Most often, removal of the lump is needed to prevent it from becoming cancerous on the long term.

    Rarity:
    Uncommon
    Top Symptoms:
    breast lump, painful breast lump, painless breast lump, white or clear fluid leaking from the breast, nipple lump
    Symptoms that never occur with intraductal papilloma:
    armpit lump
    Urgency:
    Primary care doctor

Asymmetrical Breasts Symptom Checker Statistics

  • People who have experienced asymmetrical breasts have also experienced:

    • 12% Breast Pain
    • 2% Breast Lump
    • 2% Nipple Pain
  • People who have experienced asymmetrical breasts were most often matched with:

    • 36% Breast Infection (Mastitis)
    • 36% Breast Abscess
    • 27% Breast Cyst
  • 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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