A member asked:

I have equally sized bumps behind both my ears. i'm wondering if they are swollen glands or just my mastoid bones?

3 doctors weighed in across 2 answers

Bones.: Everyone has non-movable very hard bumps behind the ears. Swollen glands move around within the skin, over the bone. They are soft and usually smaller than 1cm in size.

Answered 12/7/2017

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Mastoid bones: They are likely your mastoid prominences. If they are equal, do not worry about it. This is normal. Good luck.

Answered 7/3/2013

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