Teeth Grinding & Jaw Clenching · Quick answer
Can jaw clenching cause headaches?
The short answer
Yes. The main muscle you clench with, the masseter, teams up with a fan-shaped muscle over your temple, and when they're overworked from clenching they can refer a dull ache into the sides of your head. Mayo Clinic describes exactly this: a dull headache starting at the temples. It often shows up in the morning after a night of grinding, or builds through a tense, jaw-tight day. Easing the clenching usually eases the headache.
At a glance
A tight jaw and a nagging headache so often arrive together that it can be hard to tell which came first.
Quite often the jaw is leading. The muscles that clench sit right beside the ones we blame for tension headaches, and overwork in one readily spills into the other.
The muscle behind the headache
When you clench, the big jaw-closing muscle in your cheek, the masseter, does most of the work, helped by the temporalis, a broad muscle that spreads across your temple. Hold that contraction for hours, awake or asleep, and the muscles fatigue much as any overused muscle would.
Tired, tight jaw muscles can refer pain outward, so the ache is often felt in the temple rather than the jaw itself. Mayo Clinic lists a dull headache at the temples among the signs of bruxism, and notes the jaw muscles can even become enlarged from the repeated effort.
What this headache feels like
A clenching headache tends to be a dull, pressing ache rather than a sharp or throbbing one, sitting around the temples and sometimes spreading toward the ears. Many people notice it first thing, a clue that grinding through the night is involved.
There are often companions: a jaw that feels tired or tight, or tenderness when you press the cheek muscle. Spotting the jaw link is what points you toward the cause, rather than just reaching for another painkiller.
Telling it apart from other headaches
Not every headache is a jaw headache, so it's worth a rough sort. Ache that clusters at the temples and pairs with morning jaw soreness leans toward a bruxism cause, especially if it worsens after a clench-heavy day.
Headaches with other features, such as one-sided throbbing or a sudden, severe onset, point elsewhere and deserve their own assessment. When the pattern isn't clear, a dentist or doctor can help work out how much of it is coming from your jaw.
Easing it, and when to seek help
Because the headache tracks the clenching, the reliable route is to ease the jaw. Softening the jaw through the day and warming tight cheek muscles both help, and lowering the arousal that keeps you braced does the deeper work. A dentist's guard protects the teeth from the same grinding at night.
If headaches are frequent, severe, or not budging, that's the point to get checked. A dentist can assess the jaw and any grinding, and a doctor can rule out other causes, so you're treating the right thing.
Key takeaways
- Clenching overworks the jaw muscles, which can refer a dull ache to the temples.
- Mayo Clinic lists a temple headache among the recognised signs of bruxism.
- These headaches often show up in the morning or after a jaw-tight day.
- Easing the clenching, and protecting the teeth with a guard, tends to ease the headache.
When to get help
Stress habits are common and usually manageable. Consider talking with a dentist, doctor, or mental-health professional if you notice any of the following:
- Frequent or severe headaches, or any that are new or changing, which a doctor should assess.
- Jaw pain, clicking, or locking alongside the headaches (see a dentist).
- A sudden, severe headache unlike any before, which needs urgent medical attention.
Frequently asked questions
Can jaw clenching cause headaches even if my teeth look fine?
Yes. The headache comes from the overworked jaw muscles, not from the teeth themselves, so you can get clenching headaches before there's any visible tooth wear. Tenderness in the cheek muscle and a tired jaw are better clues than the look of your teeth.
Why is the headache worse in the morning?
Morning headaches often point to grinding or clenching during sleep, when you have no way to notice or stop it. The jaw muscles work through the night and you wake with them fatigued, so a dentist-fitted guard and a calmer evening may both help.
Will a night guard get rid of my headaches?
A guard protects your teeth and can reduce some muscle strain, so it may help, but it doesn't remove the drive to clench. Many people get the best relief by combining a guard with steps that lower daytime tension and keep the jaw loose.
Sources & further reading
The reputable organizations our editorial team draws on for the anatomy, definitions, and safety guidance behind this page, and where you can read more on each topic.
General educational information about stress and the nervous system. Not medical, dental, or psychological advice, and not a substitute for diagnosis or treatment by a qualified professional.