Read below about pain in one armpit, including causes and common questions. Or get a personalized analysis of your pain in one armpit 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 Pain in One Armpit

Updated on Aug. 29, 2018

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

  1. 1.Non - Specific Breast Pain

    Breast pain is either related to menstruation (cyclic) or not (noncyclic). It is common in pre-menopausal women and can also be a side effect of contraceptives that contain hormones like the pill, anticonceptive injections and intra-uterine devices.

    7 days

    Rarity:
    Common
    Top Symptoms:
    breast pain, breast swelling, armpit pain
    Symptoms that always occur with non-specific breast pain:
    breast pain
    Urgency:
    Primary care doctor
  2. 2.Cellulitis

    Facial cellulitis is a skin infection that typically comes from other parts of the face like the mouth or the sinuses and needs antibiotic treatment. Symptoms can be pain, redness, warmth and swelling of the affected area.

    Dependent on severity of infection

    Rarity:
    Uncommon
    Top Symptoms:
    fever, chills, facial redness, swollen face, face pain
    Symptoms that always occur with cellulitis:
    facial redness, area of skin redness
    Urgency:
    Primary care doctor
  3. 3.Enlarged Lymph Nodes in the Armpit

    Enlarged lymph nodes occur when the node becomes larger as it fills with inflammatory cells. This often is a result of an infection but can occur without a known cause.

    Enlarged lymph nodes should go away within a week or two.

    Rarity:
    Common
    Top Symptoms:
    armpit lump, movable armpit lump
    Symptoms that always occur with enlarged lymph nodes in the armpit:
    armpit lump
    Symptoms that never occur with enlarged lymph nodes in the armpit:
    fever, unintentional weight loss, hard lump in the armpit
    Urgency:
    Phone call or in-person visit

    Pain in One Armpit Checker

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  4. 4.Shoulder Strain

    Shoulder strain, also known as a muscle pull, is a common occurrence attributed to a damaged muscle and often is the result of heavy lifting or sports.

    With proper medical attention, this condition should fully resolve.

    Rarity:
    Uncommon
    Top Symptoms:
    pain in one shoulder, pain in the front of the shoulder, shoulder pain from overuse, shoulder pain from an injury, sports injury
    Symptoms that always occur with shoulder strain:
    pain in one shoulder
    Symptoms that never occur with shoulder strain:
    arm weakness, arm numbness
    Urgency:
    Phone call or in-person visit
  5. 5.Chest Pain From Reduced Cardiac Blood Flow (Angina Pectoris)

    Angina pectoris is chest pain that is felt when heart muscle needs more blood than it is currently getting. This may result from coronary artery disease (CAD). CAD happens when the arteries that supply blood to heart muscle become hardened and narrowed. This is due to the buildup of cholesterol and other material, called plaque, on their inner walls.

    Angina pectoris is reflective of underlying heart disease, which is a chronic condition once it develops.

    Rarity:
    Common
    Top Symptoms:
    chest pain, chest pain, tight, heavy, squeezing chest pain, moderate chest pain, deep chest pain, behind the breast bone
    Symptoms that always occur with chest pain from reduced cardiac blood flow (angina pectoris):
    chest pain
    Symptoms that never occur with chest pain from reduced cardiac blood flow (angina pectoris):
    productive cough
    Urgency:
    Primary care doctor
  6. 6.Allergic Contact Dermatitis of the Armpit

    Allergic contact dermatitis is a condition in which the skin becomes irritated and inflamed following physical contact with an allergen. Common products known to cause allergic dermatitis include plants, metals, soap, fragrance, and cosmetics.

    1-2 days

    Rarity:
    Common
    Top Symptoms:
    armpit redness, armpit itch, scabbed armpit bump
    Symptoms that always occur with allergic contact dermatitis of the armpit:
    armpit redness
    Urgency:
    Self-treatment
  7. 7.Shingles (Herpes Zoster)

    Shingles (herpes zoster) is a disease caused by the varicella-zoster virus - the same virus that causes chickenpox. Early signs of shingles include burning or shooting pain and tingling or itching, usually on one side of the body or face. Rashes or blisters appear anywhere from one to 14 days later. If shingles appears on the face, it may affect vision or hearing.

    An episode usually lasts 2-4 weeks.

    Rarity:
    Common
    Top Symptoms:
    symptoms of infection, dizziness, fatigue, rash, diarrhea
    Symptoms that always occur with shingles (herpes zoster):
    grouped rash, rash
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Pain in One Armpit

  • Q.Do you drink alcohol?
  • Q.Do you have a rash?
  • Q.Have you ever been diagnosed with anorexia?
  • Q.Were you ever been diagnosed with bulimia?

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

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Pain in One Armpit Symptom Checker Statistics

  • People who have experienced pain in one armpit have also experienced:

    • 8% Armpit Lump
    • 5% Rib Pain on One Side
    • 5% Pain in One Shoulder
  • People who have experienced pain in one armpit had symptoms persist for:

    • 37% Less Than a Week
    • 24% Less Than a Day
    • 20% Over a Month
  • People who have experienced pain in one armpit were most often matched with:

    • 44% Cellulitis
    • 33% Non - Specific Breast Pain
    • 22% Enlarged Lymph Nodes in the Armpit
  • 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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