Asymmetrical Skull Bumps: When to Seek Medical Advice - Orthopedics

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Asymmetrical protrusion of the skull?


I accidentally discovered a bump on the left side of my skull (about 5-6 cm above the ear) that is approximately the size of a ten-dollar coin.
It feels hard like bone.
I found that most people report bumps on the back of the skull, while mine is on the left side, and there is nothing similar on the right side.
Is this normal? Is it congenital or acquired? Should I go to the hospital for further examination?

Jia Hui, 30~39 year old female. Ask Date: 2021/07/12

Dr. Chen Yongxue reply Orthopedics


Hello, the human body is not completely symmetrical.
As you mentioned, if there are no other symptoms, it is actually not necessary to worry about it.
However, if you are really concerned, you can visit a hospital for a consultation.
Thank you.

Reply Date: 2021/07/12

More Info


Asymmetrical skull bumps can be concerning, especially when they appear suddenly or are accompanied by other symptoms. In your case, you have noticed a bump on the left side of your skull, approximately 5-6 centimeters above your ear, and it feels hard like bone. It’s important to consider several factors when evaluating whether this condition requires medical attention.

Firstly, it’s essential to determine the characteristics of the bump. If the bump has been present for a long time and has not changed in size, shape, or consistency, it may be a benign condition. Some individuals naturally have asymmetrical skull shapes or benign bone growths known as exostoses. These can occur due to various reasons, including genetic factors or previous trauma that may have gone unnoticed.

However, if the bump has developed recently, or if you experience any of the following symptoms, it is advisable to seek medical attention:
1. Pain or Discomfort: If the bump is painful or tender to the touch, this could indicate inflammation or an underlying issue that needs to be addressed.

2. Changes in Size or Shape: A bump that grows rapidly or changes in shape could be a sign of a more serious condition, such as a tumor or cyst.

3. Neurological Symptoms: If you experience headaches, dizziness, vision changes, or any other neurological symptoms, it is crucial to seek immediate medical evaluation.

4. Associated Symptoms: If you notice any swelling, redness, or warmth around the bump, or if you develop fever or other systemic symptoms, these could indicate an infection or other serious condition.

5. History of Trauma: If you have had any recent head injuries, it is important to get evaluated, as bumps can sometimes indicate underlying fractures or hematomas.

In terms of diagnostic steps, a healthcare provider may recommend imaging studies such as X-rays or a CT scan to assess the structure of the skull and the nature of the bump. This can help determine if the bump is a normal anatomical variation, a benign growth, or something that requires further investigation.

In conclusion, while asymmetrical skull bumps can be benign, it is essential to monitor any changes and consider the presence of accompanying symptoms. If you have concerns about the bump or if it has changed in any way, it is best to consult with a healthcare professional for a thorough evaluation. Early assessment can provide peace of mind and ensure that any potential issues are addressed promptly.

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