Toothache and sleep

A dentist examining a patients teeth.
Why Can a Toothache Keep You from Sleeping?

Few things are as frustrating as a toothache that strikes at night. Many patients wonder why the pain seems to intensify when they lie down, making it difficult—or even impossible—to sleep.

There are several reasons for this:

  • Lying down: when you’re in bed, blood flow increases to the head. This added pressure around an inflamed tooth makes the pain worse.

  • No distractions: during the day, activities keep your mind busy. At night, with fewer distractions, the pain feels stronger and more noticeable.

  • Inflammation: a deep cavity or infection triggers inflammation, which often worsens at night.


A toothache that keeps you awake is more than just an inconvenience—it’s often a sign of a serious dental issue, such as advanced decay, infection, or an abscess. If you can’t sleep because of dental pain, don’t wait: see a dentist promptly to address the cause and find lasting relief.