Can a Toothache Cause a Headache?

Yes, and it’s more common than most people realize. Tooth pain and headaches share overlapping nerve pathways, which means a problem that starts in your mouth can genuinely be felt as pain in your head.

Why the Connection Exists

The trigeminal nerve, which supplies sensation to your teeth and jaw, also branches into areas associated with headache pain. An infected tooth, an abscess, or significant jaw tension can all radiate pain along this shared pathway, showing up as a headache rather than (or alongside) obvious tooth pain.

Common Dental Causes of Headache-Like Pain

• An infected or abscessed tooth
• TMJ disorder, where jaw tension and clenching commonly produce headaches, especially around the temples
• Teeth grinding (bruxism), often noticed as a dull morning headache
• Impacted wisdom teeth, which can cause referred pain upward

How to Tell If a Headache Is Dental

If a headache is consistently paired with jaw soreness, tooth sensitivity, or pain that worsens when chewing, a dental cause is worth considering — especially if standard headache remedies aren’t helping. Headaches that show up at a consistent time of day, like right after waking, can also point toward nighttime grinding.

What Actually Helps

Treating the underlying dental issue — whether that’s an infection, TMJ treatment, or a night guard for grinding — often resolves the headaches that were being caused by it, without needing separate headache treatment at all. Over-the-counter pain relief can help in the short-term, but it won’t address a dental cause on its own.

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Dealing with headaches alongside jaw or tooth discomfort? Book an exam so we can check for a dental cause.