Yes, a migraine can make your teeth hurt. The ache is usually referred pain: trigeminal nerve branches that supply the teeth, jaw, and scalp converge on the same brainstem relay, so a migraine signal can be misread as coming from your mouth. Roughly 40% of people with migraine report facial or oral pain during attacks, and in a subset the teeth are the main complaint.
The trigeminal convergence mechanism
The fifth cranial nerve, the trigeminal nerve, carries sensation from your face, including every tooth. Its three divisions, the ophthalmic, maxillary, and mandibular branches, collect signals from the forehead, the upper jaw, and the lower jaw respectively. All three feed into a single cluster of neurons in the brainstem called the trigeminal nucleus caudalis, which is the same relay station that receives pain signals from the meninges, the membranes around the brain.
When migraine activates the meningeal nerves, those signals arrive at the same second-order neurons that normally answer for your teeth. The brain cannot tell which input is the true source, because the neurons it listens to serve both territories. This is the classic mechanism of referred pain, and it explains why a toothache can appear without any decay, crack, or gum disease. The pain is real to you. It simply originates somewhere else.
The deeper layer involves central sensitization. Repeated migraine attacks lower the firing threshold of those shared neurons, so ordinary input from a tooth or jaw muscle starts to register as painful. Researchers call this expansion of receptive fields, and it is why dental pain and migraine so often travel together over months or years. In plain terms, the brain's alarm panel gets wired so that a mild tooth signal trips the same bell as a headache.
How often, how much, and where
The overlap is well documented at the population level. Studies of migraine patients consistently find that a substantial minority experience oral or facial pain during attacks, with estimates clustering well above what you would expect from chance. The precise figure varies by how a study defines facial pain, so treat any single percentage as an order of magnitude rather than a fixed number. What matters clinically is that the association is strong enough that headache specialists routinely screen for it.
Location follows nerve anatomy. Upper teeth hurt more often with migraine than lower teeth, and one side usually dominates, matching the side of the headache. Pain that switches sides between attacks points toward migraine rather than a single bad tooth, which stays put. Jaw and temple pain also cluster in the same pattern because the mandibular division and the temporalis muscle share that same trigeminal supply.
Duration tracks the headache. Referred dental pain during a migraine typically builds over 20 to 60 minutes, peaks with the headache, and fades within hours to a day. A toothache that outlasts the headache by several days, or that appears only when you bite, is more likely to be dental in origin.
Timeline: what referred dental pain looks like
| Phase | Typical timing | What you may feel |
|---|---|---|
| Prodrome | Hours to 1 day before headache | Vague jaw or tooth awareness, often dismissed |
| Aura (if present) | 5 to 60 minutes | Rarely oral; visual and sensory symptoms dominate |
| Headache build | 20 to 60 minutes | Deep, dull ache in upper or lower teeth, one side |
| Peak headache | Minutes to hours | Tooth pain worst, may feel like whole quadrant |
| Resolution | Hours to 1 day | Dental ache fades with the headache |
| Postdrome | Up to 1 day | Tender jaw, sensitivity to chewing, fatigue |
The key pattern is coupling. Referred dental pain rises and falls with the headache. Dental pain from a cavity or infection does not care about your headache cycle.
When the tooth is actually the problem
Not every toothache during a migraine is referred. The two conditions can coexist, and one can trigger the other. A cracked tooth, an impacted wisdom tooth, or a sinus infection with dental involvement can set off a headache that looks migrainous. The professional caveat that matters most here is that misattributing genuine dental pathology to migraine is a real and documented harm, because an untreated abscess can progress to a serious infection.
Certain red flags should send you to a dentist or physician rather than to a headache explanation.
Facial swelling, fever, or pus near a tooth, which can signal an abscess or spreading infection. Pain that wakes you from sleep or persists for more than a few days after a migraine ends. Pain triggered reliably by hot, cold, or sweet food and drink. A tooth that is sensitive to tapping or biting, or that feels loose. Recent facial trauma, or new numbness in the lip, tongue, or cheek. Pain with swelling under the eye or difficulty opening your mouth.
Misconceptions and the bruxism overlap
A common assumption is that all tooth pain during a headache comes from clenching. Bruxism, the grinding or clenching of teeth, does spike during migraine and can cause genuine jaw and tooth soreness. But it is not the whole story, and assuming it is leads people to buy guards instead of treating the migraine. The referred nerve mechanism operates whether or not you clench. Clenching adds its own muscle component, often in the temporalis and masseter muscles, which compounds the ache.
A second misconception is that clearing dental disease rules out an oral cause of migraine. It does not. Trigeminal neuralgia and other facial pain disorders can mimic both migraine and toothache, and their treatments differ. A third is that a negative dental x-ray ends the investigation. Referred pain leaves no dental trace, which is exactly the point.
A counterintuitive detail worth holding onto: the same convergence mechanism means dental procedures can sometimes trigger or relieve migraine attacks, and some people report fewer headaches after dental treatment. The relationship runs in both directions, which is why headache specialists and dentists increasingly compare notes.
Comparison: referred migraine pain versus dental pain
| Feature | Referred migraine pain | Dental or jaw pathology |
|---|---|---|
| Onset | With or just before headache | Gradual, tied to chewing or temperature |
| Location | One side, often upper teeth, can shift | Fixed to a specific tooth or area |
| Duration | Hours, fades with headache | Persistent until treated |
| Response to heat, cold, sweets | None | Often sharp and reproducible |
| Response to tapping or biting | Minimal | Usually positive |
| Findings on exam or x-ray | Normal | Cavity, crack, abscess, or pulpitis |
| Pattern across attacks | Varies with migraine cycle | Stable over time |
Practical steps and thresholds
If you suspect migraine is causing your tooth pain, a structured approach saves time and money. The aim is to separate referred pain from true dental disease, not to self-diagnose one away.
Keep a two-week log pairing headache severity with dental pain. Note side, tooth group, timing, and what makes it worse. Book a dental exam first, not later, if you have any red flag. Otherwise schedule one within a few weeks so a baseline exists. Tell your dentist the pain is linked to your migraine and ask for a focused exam of the affected teeth, including pulp sensitivity testing. Ask your clinician about whether your migraine treatment is well controlled, since better attack control often reduces referred facial pain. Do not change any medication schedule without advice. Avoid buying a night guard before a professional assessment, because an ill-fitting guard can worsen jaw pain. Track triggers such as missed meals, disrupted sleep, and stress, and note whether dental pain clusters with them.
A reasonable threshold for escalation: pain lasting more than 3 days beyond the headache, or any new swelling, fever, or numbness, warrants prompt professional evaluation rather than watchful waiting.
What the evidence cannot yet settle
The core mechanism, trigeminal convergence and central sensitization, is well established. What remains uncertain is why some people with migraine experience oral pain and others do not, and whether treating referred dental pain earlier changes migraine outcomes. Imaging and clinical research have not delivered a clean predictive rule, so clinicians work from pattern and history. The honest position is that the association is real, the mechanism is credible, and the boundary between referred and true dental pain is best drawn by examination rather than assumption. If you are unsure which side of that line you are on, the safe default is to have both a dentist and a headache clinician weigh in.