My lower jaw, behind the left ear, is swollen, and painful. What is it?

See doctor. Can be swollen gland or muscular. See your doctor to check the swelling to see where it is located and its cause.

Related Questions

The bone behind my left ear is swollen and very painful like a burning sensation. Have a lump where ear meets jaw. Could this be a mastoid bone infect?

Unlikely. It is impossible to have a mastoid infection without a middle ear infection. The tendons of the large neck muscles attach on the mastoid bone and you could have either a tendonitis or myositis. The lump where the ear meets the jaw could be the parotid gland tail. See an ENT doctor for a specific diagnosis. Read more...