Hard Lumps in Armpits: What You Need to Know - Internal Medicine

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Axillary lymph nodes


I have previously felt a small, round, hard lump under my armpit that feels like a BB pellet.
It doesn't hurt and hasn't changed in size.
I'm not sure what it is, and I'm quite worried.
>_<

Xiao Xue, 20~29 year old female. Ask Date: 2011/03/24

Dr. Gao Jiankai reply Internal Medicine


Hello, sometimes even healthy individuals can feel lymph nodes, so it doesn't necessarily indicate a problem.
The first step is to assess their size, whether they are mobile or fixed, if there is one or multiple nodes, and whether they are unilateral or bilateral, among other factors.
It's also important to rule out other differential diagnoses, including lipomas (sebaceous cysts) and others.
In summary, if you are concerned, it is advisable to consult a physician.
It is recommended to see a general surgeon or a breast surgeon.
Changhua Hospital Allergy, Immunology, and Rheumatology Department is here to care for you.

Reply Date: 2011/03/24

More Info


When it comes to hard lumps in the armpits, it's important to understand that there can be a variety of causes, and while many are benign, some may require further evaluation. The lump you described, which feels like a small, hard ball and is not painful or growing, could potentially be a few different things.

1. Lymph Nodes: One of the most common causes of hard lumps in the armpit area is swollen lymph nodes. Lymph nodes can become enlarged due to infections, inflammation, or other immune responses. If the lump is a lymph node, it may be a sign that your body is fighting off an infection, even if you are not experiencing other symptoms.

2. Lipomas: Another possibility is a lipoma, which is a benign tumor made of fat tissue. Lipomas are usually soft, movable, and painless. They can occur anywhere in the body, including the armpit area, and are generally harmless.

3. Sebaceous Cysts: These are small, non-cancerous lumps that can form under the skin when a sebaceous gland becomes blocked. They are usually painless and can feel firm or soft, depending on their contents.

4. Fibromas: These are benign tumors made of fibrous or connective tissue. They can also appear as hard lumps and are typically painless.

5. Infections or Abscesses: If the lump were to become painful, red, or warm to the touch, it could indicate an infection or abscess, which would require medical attention.

Given that your lump has not changed in size, is not painful, and has been present for some time, it is likely benign. However, it is always a good idea to consult with a healthcare professional for an accurate diagnosis, especially if you notice any changes in the lump, such as growth, pain, or other symptoms.


Recommendations:
- Monitor the Lump: Keep an eye on the lump for any changes in size, shape, or symptoms. If it remains stable, it may not require immediate attention.

- Consult a Doctor: If you have concerns or if the lump changes, it is advisable to see a healthcare provider. They may perform a physical examination and, if necessary, imaging studies or a biopsy to determine the nature of the lump.

- Avoid Self-Diagnosis: While it’s natural to worry about lumps, self-diagnosing can lead to unnecessary anxiety. A professional evaluation is the best way to alleviate concerns.


Conclusion:
In summary, while a hard lump in the armpit can be concerning, many causes are benign. Regular monitoring and consulting with a healthcare provider for any changes or concerns is the best course of action. Remember, your health is important, and seeking professional advice can provide peace of mind and appropriate care.

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