Lumps Under the Armpit: When to Seek Medical Attention

There is a hard lump in the armpit?

In the past few days, I noticed some discomfort due to slight friction in my right armpit, which I initially thought was due to sweating, as the left side did not have the same issue.
Later, I discovered that pressing on the right armpit was painful, and the next day, when I pressed and felt around, I noticed what seemed to be a small lump (not large).
I thought it might be due to my irregular schedule lately, so I didn't pay much attention to it.
Three days later, while showering, I remembered the lump in my right armpit and went to feel it.
To my surprise, I found a small elongated hard lump, and when I raised my right arm, I could clearly see some swelling.
Could this be related to my breast? My last menstrual period was on May 8, but I have not experienced this situation before; I usually only have breast tenderness or lower back pain with frequent urination during my periods.

Xiao Hei, 20~29 year old female. Ask Date: 2018/05/31

Dr. Chen Sirong reply Oncology

Xiao Hei / 29 years old / Female
1.
I discovered a hard lump under my right armpit.
Could this be related to my breast?
A: A lump in the armpit or lymph nodes, especially in a female, often raises concerns about breast-related issues.
2.
My last menstrual period was on May 8, but I have never experienced this situation before; I only have breast tenderness, lower back pain, and frequent urination.

A: In fact, the breasts can start to undergo changes a few days before menstruation, such as swelling and hardness.
This is due to increased secretion of estrogen and progesterone from the ovaries, leading to breast swelling.
The swelling can easily be mistaken for a hard lump, causing unnecessary worry.
Therefore, the most appropriate time for examination would be three to five days after menstruation, when the breasts have returned to their normal state, making it easier to diagnose whether a true lump is present.
It is advisable to schedule the examination for three to five days after the June menstrual period.
Wishing you a speedy recovery and best regards from Taoyuan Hospital, Chen Si-Rong.

Reply Date: 2018/05/31

More Info

When it comes to discovering lumps under the armpit, it’s essential to approach the situation with caution and awareness. The presence of a lump or swelling in the armpit can be concerning, and understanding when to seek medical attention is crucial for your health.

Firstly, it’s important to recognize that lumps in the armpit can arise from various causes. They may be benign, such as swollen lymph nodes, which can occur due to infections, inflammation, or even recent vaccinations. Lymph nodes are part of the immune system and can become enlarged when your body is fighting off an illness. Other potential causes include cysts, lipomas (fatty tumors), or even skin infections like abscesses.

However, there are also more serious conditions that can lead to lumps in this area, including breast cancer or lymphoma. While it’s common for women to experience changes in breast tissue and lymph nodes during their menstrual cycle, any persistent changes or discomfort should not be ignored.

In your case, you mentioned that you have noticed a hard lump that is painful to the touch and that it seems to be associated with some swelling when you raise your arm. This could indicate an inflammatory process or an infection, particularly if there is tenderness. Given that you have also experienced changes in your menstrual cycle, it’s worth considering that hormonal fluctuations can sometimes lead to breast tissue changes, but the presence of a lump warrants further investigation.

Here are some guidelines on when to seek medical attention:
1. Persistent Symptoms: If the lump persists for more than a couple of weeks or continues to grow, it’s essential to consult a healthcare provider.
2. Pain and Discomfort: If the lump is painful or tender, especially if the pain worsens or is accompanied by other symptoms like fever, it’s advisable to seek medical evaluation.

3. Changes in Size or Shape: Any noticeable changes in the size or shape of the lump, or if it becomes hard or fixed in place, should prompt a visit to your doctor.

4. Associated Symptoms: If you experience other symptoms such as unexplained weight loss, night sweats, or fatigue, these could be signs of a more serious condition and should be evaluated promptly.

5. Family History: If you have a family history of breast cancer or other related conditions, it’s wise to be proactive about any changes you notice.

During your visit, your healthcare provider will likely perform a physical examination and may recommend imaging studies, such as an ultrasound or mammogram, to assess the lump further. In some cases, a biopsy may be necessary to determine the nature of the lump.

In summary, while many lumps under the armpit can be benign, it’s crucial to monitor any changes and seek medical attention if you have concerns. Early detection and diagnosis are key to addressing any potential issues effectively. Don’t hesitate to reach out to your healthcare provider for guidance and reassurance regarding your symptoms. Your health and peace of mind are paramount, and it’s always better to err on the side of caution when it comes to changes in your body.

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