Persistent Bump on the Back of the Head: Is It Normal?

Head mass

Hello doctor, when I was in fifth grade, I hit the back of my head hard and bled profusely.
I went to the emergency room for bleeding control, but no further treatment was done afterward.
I originally thought the lump on the back of my head would decrease in size over time, but now that I am 25 years old, the lump is still there and hasn't changed.
Is this normal?

You, 20~29 year old female. Ask Date: 2024/02/26

Dr. Xu Kaixi reply Surgery

This lump may be fibrous tissue formed after the absorption of a scalp hematoma.
If it has persisted for such a long time, it is unlikely to disappear on its own.
It is recommended that you visit a surgical outpatient clinic for examination and diagnosis confirmation.

Reply Date: 2024/02/26

More Info

It is understandable to be concerned about a persistent bump on the back of your head, especially given your history of a significant injury during childhood. Based on the information provided, it is important to consider several factors regarding the nature of the bump and its implications.

Firstly, it is not uncommon for individuals to have bumps or irregularities on their skulls. The human skull is not a perfectly smooth structure; it has natural contours, ridges, and variations in thickness. These variations can be more pronounced in some individuals than in others. In your case, the bump you are describing could be a result of the trauma you experienced when you were younger. After a significant impact, the body often responds by forming a callus or bone growth at the site of injury, which can lead to a persistent bump.

The fact that the bump has not changed in size over the years is also a noteworthy point. If the bump were to grow rapidly or if you began to experience additional symptoms such as pain, headaches, dizziness, or neurological changes, it would warrant further investigation. However, if the bump is stable and you are not experiencing any other concerning symptoms, it is likely that it is benign.

It is also important to consider the possibility of other conditions that could lead to a bump on the skull. For instance, conditions such as osteomas (benign bone tumors), lipomas (fatty tumors), or even cysts can present as bumps on the head. However, these conditions typically have distinct characteristics and may present with additional symptoms.

Given your history of trauma, it would be prudent to consult with a healthcare professional, preferably a neurologist or a neurosurgeon, who can perform a thorough examination and possibly imaging studies, such as a CT scan or MRI, to assess the bump more accurately. These imaging studies can provide valuable information about the underlying bone structure and help rule out any serious conditions.

In summary, while it is possible that the bump on the back of your head is a normal variation or a result of your previous injury, it is essential to monitor it and seek medical advice if you have any concerns. Regular check-ups with a healthcare provider can help ensure that any changes in your condition are addressed promptly. Remember, your health and peace of mind are paramount, and it is always better to err on the side of caution when it comes to potential health issues.

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