OsteoVIt is mid-afternoon and you catch yourself doing it again. Teeth pressed together, jaw set, shoulders somewhere near your ears. Most of us clench without noticing, especially under stress. For people with headache and migraine, the jaw is one of the most overlooked pieces of the puzzle, and one of the more fixable ones.
Why the jaw and the head share pain
The jaw joint and the muscles that move it are supplied by the trigeminal nerve. So is most of your head and face. This is the same nerve system at the centre of a migraine attack. Pain signals from the jaw and from the head arrive at the same processing hub in the brainstem, and the brain does not always label the source accurately. Tension or strain in the chewing muscles can be felt as temple pain, and a sensitised headache system can make the jaw feel worse in turn.
That anatomy explains something patients often tell me sheepishly, as if they might be imagining it: that their headaches seem to start near the jaw, or that a bad jaw day and a bad head day tend to be the same day. You are not imagining it. The wiring backs you up.
The clue is often in the temples
Problems with the jaw joint and its muscles are grouped under the name temporomandibular disorders, or TMD. The international headache classification recognises a specific headache caused by TMD: typically felt in the temple, brought on or worsened by chewing or clenching, and reproducible when the jaw is examined.
Signs that your jaw may be contributing include headaches concentrated around the temples, pain that is worse with chewing tough food or after long conversations, clicking or locking of the jaw, waking with an aching face or teeth pressed together and a dentist noticing wear on your teeth. Tooth grinding and clenching are common companions. A large review estimated that around one in five adults grinds or clenches, whether awake or during sleep, and plenty of us have no idea we are doing it.
Jaw problems and migraine feed each other
TMD is significantly more common in people with migraine than in people without, and more common still in chronic migraine, where attacks occur on 15 or more days a month. That does not mean the jaw causes migraine. The relationship seems to run in both directions: frequent migraine makes the pain system more sensitive, which makes jaw symptoms more likely, and an irritable jaw feeds a steady stream of pain signals into an already sensitised system.
In practice, the jaw often acts as an amplifier. It is rarely the whole story, but in someone whose attacks are frequent it can be one of the dials that is quietly turned up. Turning it down will not cure migraine, and no honest clinician should promise that. It can lower the overall load on the system, and for some people that makes a noticeable difference to how often the headaches come.
What actually helps
The encouraging news is that most TMD improves with conservative care rather than anything drastic. UK guidance for GPs and dentists starts with self-management, and the basics are simple. Notice the daytime clench and interrupt it: lips together, teeth apart, tongue resting gently on the roof of the mouth. Give the jaw easier work during a flare by softening your food and cutting out chewing gum. Watch the habits that load the joint, like nail biting, pen chewing and resting your chin on your hand.
Beyond self-care, assessment is where things get useful. The jaw does not work alone. It shares muscles, nerves and posture with the neck, and the two usually need looking at together. Hands-on treatment of the jaw and neck muscles, specific exercises and advice on stress and sleep can all play a part. If grinding is wearing your teeth, your dentist may suggest a splint. Where jaw symptoms sit alongside frequent migraine, the migraine needs treating properly in its own right too.
When to seek urgent care
See a doctor promptly, or call 999, if you have a sudden, severe "thunderclap" headache, a headache with fever and a stiff neck, new weakness, numbness or confusion, or a headache after a head injury. New or changing headaches always deserve medical assessment.
If your headaches cluster around your temples, or your jaw aches and clicks and nobody has ever examined it alongside your head and neck, an assessment can join those dots. You are welcome to book an appointment or get in touch.
- International Classification of Headache Disorders, 3rd edition (ICHD-3): 11.7 Headache attributed to temporomandibular disorder. ichd-3.org
- Yakkaphan P et al. Temporomandibular disorder and headache prevalence: a systematic review and meta-analysis. Cephalalgia Reports, 2022.
- Zieliński G et al. Global prevalence of sleep bruxism and awake bruxism in pediatric and adult populations: a systematic review and meta-analysis. Journal of Clinical Medicine, 2024.
- National Institute for Health and Care Excellence (NICE). Clinical Knowledge Summaries: Temporomandibular disorders. cks.nice.org.uk
- British Journal of General Practice. The management of temporomandibular disorders: a headache in general practice, 2019. bjgp.org