Painful Lumps in the Armpit: Possible Causes and Concerns

Since childhood, I have had a hard lump in my armpit that is painful?

Hello, I would like to ask about a hard lump located below my right armpit.
It hurts when pressed (while others feel itchy when scratched, I feel pain).
However, I have had this since childhood, and there is a family history of breast cancer in both my direct and extended relatives.
Although I know the likelihood of it being cancer is low, I still want to inquire what this could possibly be?

Niming, 20~29 year old female. Ask Date: 2016/03/08

Dr. Chen Sirong reply Oncology

Anonymous / 22 years old / Female
I apologize for being unable to determine the issue based on your description.
It is necessary for you to seek in-person medical evaluation for an accurate diagnosis.
Thank you for your message.
Taoyuan Hospital
Dr.
Chen Sih-Rong

Reply Date: 2016/03/08

More Info

When it comes to painful lumps in the armpit, there are several potential causes that can range from benign to more serious conditions. Given your history of having this lump since childhood, along with a family history of breast cancer, it’s understandable that you would have concerns. However, it’s important to note that not all lumps in the armpit are cancerous.

One common cause of a lump in the armpit is an enlarged lymph node. Lymph nodes can become swollen due to infections, inflammation, or other benign conditions. For example, a common cold or a localized skin infection can lead to lymphadenopathy, which is the medical term for swollen lymph nodes. In your case, if the lump has been present for a long time and has not changed significantly in size or characteristics, it might be a benign lymph node that has been reactive to various stimuli over the years.

Another possibility is a lipoma, which is a benign tumor made of fat tissue. Lipomas are usually soft, movable, and painless, but they can sometimes become tender if they press against surrounding tissues or nerves. If the lump is firm and painful when pressed, it may not be a lipoma.

Additionally, cysts can form in the armpit area. These fluid-filled sacs can be caused by blocked sweat glands or hair follicles and can become inflamed or infected, leading to pain and discomfort.
Given your family history of breast cancer, it’s wise to be vigilant. While the likelihood of breast cancer presenting as a lump in the armpit is relatively low, it is not impossible. Breast cancer can sometimes cause lymph nodes in the armpit to enlarge, particularly if the cancer has spread. However, breast cancer typically presents with other symptoms such as changes in the breast tissue, skin changes, or nipple discharge.

To address your concerns, it is crucial to consult a healthcare professional who can perform a physical examination and possibly recommend imaging studies, such as an ultrasound, to better understand the nature of the lump. In some cases, a biopsy may be necessary to rule out malignancy, especially given your family history.

In summary, while the lump in your armpit could be due to a benign cause such as an enlarged lymph node, lipoma, or cyst, it is essential to have it evaluated by a healthcare provider. They can provide a definitive diagnosis and peace of mind. Regular self-examinations and awareness of any changes in the lump's size, shape, or associated symptoms are also important in monitoring your health.

Similar Q&A

Understanding Painful Lumps in the Armpit: Causes and Concerns

I have recently noticed a lump in my armpit that hurts when I raise my arm and squeeze it. It also hurts when I touch it. What could this symptom be? I've been under a lot of academic stress and have been staying up late for about a month. Could this be related? Or is it due...

Dr. Hu Ziren reply Oncology
Dear netizens, hello! Usually, a painful lump that appears in a short period of time is mostly caused by inflammation and infection. The primary site of infection and inflammation should be assessed in conjunction with other symptoms, such as: Is there a wound on the arm? Is ther...

Understanding Painful Lumps in the Armpit: Causes and Concerns

There are small lumps in the armpit, one of which is about 2 centimeters in size and is painful. What could it be? Thank you!

Dr. Lin Kecheng reply Surgery
Hello, Xiao Zhen: Generally, due to the presence of axillary hair, there is a higher distribution of hair follicles in the armpit area, and correspondingly, there are more sebaceous glands at the base of these follicles. Since sweat often accumulates in the armpits, the likelihoo...

Understanding Armpit Lumps: Causes, Symptoms, and Treatment Options

There is a lump in the armpit that bleeds when pressed, and the lump is still present, approximately 1.5 centimeters in size, with swelling and pain.

Dr. Xu Kaixi reply Surgery
Based on your description, it may be a subcutaneous cyst with infection and inflammation. I recommend that you visit a surgical outpatient clinic for evaluation.

Understanding Painful Lumps in the Armpit: Causes and Concerns

Hello Dr. Chen: Three years ago, I accidentally discovered that I sometimes have small tumors (beneath the skin) in my armpit. They are round and small, and they hurt slightly when pressed. After a few days, they disappear without any issues. Recently, I feel like they have been ...

Dr. Chen Nengjin reply Obstetrics and Gynecology
Hello: Regarding your question, it may be accessory breast tissue, which is a normal phenomenon. To put your mind at ease, please consult with an obstetrician-gynecologist. Thank you.