OpenHealth Q&A

It's understandable to be concerned about a new bump, especially when it may be tender or painful. A marble-sized, hard bump on the back of your head could have several potential causes, including:

1. Sebaceous Cyst: A small, benign lump that can develop in the skin, often containing a fatty substance.
2. Bone Growth: It could be a normal bony prominence, especially if there’s been no recent trauma or injury.
3. Lymph Node: While lymph nodes can be swollen or tender during infections, the immobility and bony nature of your bump make this less likely.
4. Other Conditions: There are various other skin conditions or benign tumors that might present similarly.

It's important to note that bumps in this area are often benign and not typically indicative of serious health issues.

Next Steps:

1. Monitor: Keep an eye on the bump for changes in size, shape, or level of tenderness. Take note of how long it has been present and any other symptoms, such as headaches or visual changes.

2. Self-Care: Apply a warm compress to the area to help with discomfort. This may also help if there is any inflammation.

3. Limit Irritation: Avoid tight hairstyles or hats that might irritate the bump further.

4. Check for Other Symptoms: Be attentive to any new symptoms, such as swelling in nearby areas, fever, or chills, which could indicate infection.

5. Consider Timing for Further Action: If the bump persists for more than a couple of weeks, grows larger, becomes increasingly painful, or if you notice other concerning symptoms, it would be advisable to seek medical evaluation for potential imaging and assessment.

If you have any further questions or concerns, feel free to ask!