Indentations in the Skull: When to Seek Medical Advice

The bones of the skull are slightly concave?

Hello doctor, over the past few days, I noticed a section of bone near the left ear at the back of my head that feels like it has a slight indentation (about three centimeters long).
I would like to know if this is a normal phenomenon.
The right side is smooth without any indentations or protrusions.
I'm not sure if this indentation has been there for a long time or if it has developed recently, as I don't recall feeling any indentation before.
Thank you.

SS, 20~29 year old female. Ask Date: 2021/08/07

Dr. Lai Zhaokang reply Neurosurgery

Hello! It is suspected to be caused by congenital factors or during the growth and development period of childhood.
If you have concerns, please consult a neurosurgeon or an otolaryngologist for a physical examination and assessment.
Best wishes to you.
// Dr.
Lai Chao-Kang, Changhua Hospital

Reply Date: 2021/08/07

More Info

When it comes to indentations or irregularities in the skull, it is essential to approach the situation with caution and awareness of the potential underlying causes. The discovery of a three-centimeter indentation near the back of the skull, particularly close to the left ear, raises several considerations regarding its nature and whether medical advice is warranted.

Firstly, it is important to note that the human skull is not perfectly symmetrical, and minor variations in shape can be normal. Some individuals may have naturally occurring indentations or variations due to genetic factors or developmental aspects. However, any new or noticeable changes in the skull's contour should be evaluated, especially if they are accompanied by other symptoms.

Here are some key points to consider regarding indentations in the skull:
1. Duration and Change: If the indentation is new and you have not noticed it before, it is crucial to monitor any changes over time. A sudden appearance of an indentation could indicate an underlying issue that may require medical attention.

2. Associated Symptoms: Pay attention to any accompanying symptoms such as pain, swelling, headaches, dizziness, or neurological changes (e.g., vision changes, balance issues, or cognitive changes). The presence of these symptoms may indicate a more serious condition that necessitates immediate medical evaluation.

3. Possible Causes: There are several potential causes for skull indentations, including:
- Trauma: A recent injury to the head could lead to localized changes in the skull's shape.

- Infection or Inflammation: Conditions such as osteomyelitis (infection of the bone) or other inflammatory processes could lead to changes in the skull.

- Tumors or Growths: Benign or malignant growths can sometimes cause deformities in the skull.

- Congenital Conditions: Some individuals may have congenital skull deformities that become more noticeable with age.

4. When to Seek Medical Advice: It is advisable to seek medical attention if:
- The indentation is new and has developed recently.

- You experience any pain, discomfort, or other concerning symptoms.

- You have a history of head trauma or other medical conditions that could affect the skull.

5. Medical Evaluation: A healthcare professional may perform a physical examination and may recommend imaging studies, such as X-rays or a CT scan, to assess the skull's structure and rule out any serious underlying conditions.

In conclusion, while minor variations in skull shape can be normal, any new indentation, especially if it is accompanied by other symptoms, should be evaluated by a healthcare provider. It is always better to err on the side of caution when it comes to changes in your health. If you are concerned about the indentation you have noticed, I recommend scheduling an appointment with a physician who can provide a thorough assessment and determine if further investigation is necessary.

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