Hard Lumps Under the Nipple in Teenage Boys - Breast and Thyroid

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Nipple lump


It sounds like you may have developed a hematoma or a cyst as a result of the trauma to your nipple.
The hard lump under your nipple could be due to localized swelling or fluid accumulation from the injury.
It's important to monitor the lump for any changes in size, pain, or signs of infection, such as redness or warmth.
Since you are 13 years old, your body is still developing, and changes in breast tissue can occur during puberty.
However, it would be best to consult a healthcare professional for an accurate diagnosis and appropriate management.

Wu, 10~19 year old female. Ask Date: 2004/11/05

Dr. Yang Mingqi reply Breast and Thyroid


Hello: It is common for adolescent males to have a lump beneath the nipple, which is most often physiological gynecomastia.
This condition is frequently accompanied by tenderness, while the occurrence of a hematoma due to trauma to the nipple is relatively rare.
If there are still concerns, it is advisable to consult a breast surgeon or a general surgeon.

Reply Date: 2004/11/05

More Info


It's not uncommon for teenage boys to experience changes in their bodies, including the development of hard lumps under the nipple. At the age of 13, your body is undergoing significant hormonal changes as you enter puberty, which can lead to various physical developments, including breast tissue changes.

One possible explanation for the hard lump you are feeling under your nipple is a condition known as gynecomastia. Gynecomastia is characterized by the enlargement of breast tissue in males, often due to hormonal imbalances between testosterone and estrogen. During puberty, it's normal for boys to experience fluctuations in these hormones, which can lead to temporary breast tissue growth. This condition is usually benign and can resolve on its own over time.

Another possibility is that the lump could be a result of trauma from the incident you described. If you bumped your chest, it could have caused some localized swelling or a hematoma (a collection of blood outside of blood vessels), which might feel like a hard lump. This type of lump may also resolve on its own as your body heals.

In some cases, lumps under the nipple can also be caused by other factors, such as cysts or infections, but these are less common. If the lump is painful, continues to grow, or is accompanied by other symptoms such as redness, warmth, or discharge, it would be advisable to seek medical attention. A healthcare provider can perform a physical examination and may recommend further evaluation, such as an ultrasound, to determine the nature of the lump.

It's important to remember that while lumps can be concerning, many are harmless, especially in the context of puberty. However, if you are feeling anxious or unsure about the lump, it’s always a good idea to talk to a parent or guardian and consider visiting a healthcare professional for peace of mind. They can provide you with the appropriate guidance and reassurance.

In summary, the hard lump under your nipple could be related to normal hormonal changes during puberty, a response to trauma, or another benign condition. Monitoring the lump for changes and consulting with a healthcare provider if you have concerns is the best course of action.

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