Underarm Lumps: Causes and Treatments for Breast Issues - Breast and Thyroid

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Axillary lump nipple care


I initially had a yellow-sized lump under my armpit that appeared to be an allergic reaction, but it eventually resolved.
However, a lump the size of a silkworm cocoon developed under the same armpit (growing larger within two days) and is extremely itchy.
I applied topical steroids on both sides for itching relief, but it was ineffective.
After using the steroids, I occasionally experience sharp pain due to friction, and my nipples are also very itchy.
The areolas have slightly swollen, and my nipples appear somewhat inverted.
Additionally, my external genitalia has become swollen and is intensely itchy.
I later consulted an allergist who stated it was not an allergy and prescribed antibiotics (suspecting a bacterial infection).
Despite taking the antibiotics, the lumps have not diminished.
I would like to know what is happening to me.
The lumps have persisted for three weeks (with the nipple and genital swelling occurring about a day apart), and I have many pimple-like bumps on my chest, which have been present for several years.

A Bu, 20~29 year old female. Ask Date: 2013/11/14

Dr. Zhou Jiazhen reply Breast and Thyroid


Dear Abu,
Hello, the lumps in the armpit are mostly skin cysts, but they are usually not itchy.
If there is swelling in both the armpit and the vulva accompanied by significant itching, it may be related to an allergic or immunological issue.
It is recommended to consult with an allergist, immunologist, or dermatologist.

Wishing you safety and health,
Director of Surgery, Taoyuan General Hospital, Ministry of Health and Welfare,
Zhou Jiazhen

Reply Date: 2013/11/14

More Info


It sounds like you are experiencing a complex set of symptoms involving lumps in your underarm area, breast discomfort, and changes in your nipple and areola. Given the details you've provided, it’s important to consider several potential causes and treatment options for your condition.

Firstly, the lumps you describe in your underarm that have increased in size and are itchy could be indicative of several conditions. One possibility is a condition known as hidradenitis suppurativa, which is a chronic skin condition characterized by lumps in areas where skin rubs together, such as the underarms. These lumps can become inflamed and painful, and they may also lead to the formation of abscesses. Another possibility is a lymphadenopathy, which is the swelling of lymph nodes often due to infection or inflammation in the body.
The fact that you have been prescribed antibiotics suggests that your healthcare provider is concerned about a bacterial infection, which could be causing the swelling and discomfort. If the lumps persist despite antibiotic treatment, it may be necessary to explore other underlying causes, such as a more chronic infection or even a dermatological condition that may not respond to standard treatments.

Regarding the breast symptoms, including the itchy nipples and changes in the areola, these could be related to hormonal fluctuations, especially if you are experiencing changes in your menstrual cycle or have a history of hormonal imbalances. Hormonal changes can lead to breast tenderness, swelling, and even changes in the skin texture of the breast and nipple area. However, the presence of persistent lumps, changes in the nipple shape (such as retraction), and any discharge should be evaluated by a healthcare professional to rule out more serious conditions, including infections or even malignancies.

It’s also worth noting that the presence of “pimple-like” bumps on the breast could be related to a condition called Montgomery tubercles, which are normal anatomical structures found on the areola. However, if these bumps have changed in appearance or have become painful, it warrants further investigation.

In terms of treatment, it’s crucial to follow up with a healthcare provider, preferably a specialist in breast health or dermatology, who can perform a thorough examination and possibly imaging studies (like an ultrasound) to assess the lumps and any other abnormalities. Depending on the findings, treatments may include topical medications, further antibiotics if an infection is confirmed, or even surgical intervention if there are abscesses or other significant findings.

In the meantime, managing symptoms with over-the-counter pain relief and avoiding irritants (like harsh soaps or tight clothing) can help alleviate discomfort. It’s also important to keep the area clean and dry to prevent further irritation or infection.

In conclusion, while some of your symptoms may be related to hormonal changes or benign conditions, the persistence and nature of your symptoms necessitate a thorough evaluation by a healthcare professional. They can provide a definitive diagnosis and appropriate treatment plan tailored to your specific situation. Please do not hesitate to seek medical attention if your symptoms worsen or if you have any concerns about your health.

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