2 doctors weighed in:

I have a bump on the back of my head at the base of my neck and skull. It's slightly tender. I didn't bump my head or anything. What could this be?

2 doctors weighed in
Dr. David Kam
ENT - Head & Neck Surgery
1 doctor agrees

In brief: Mass back of head

You 'll need to see a doctor to examine the mass.
It can be a lipoma, sebaceous cyst, osteoma or other tumors.

In brief: Mass back of head

You 'll need to see a doctor to examine the mass.
It can be a lipoma, sebaceous cyst, osteoma or other tumors.
Dr. David Kam
Dr. David Kam
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