Can a Toothache Give You a Headache? The Short Answer and the Long One

Yes, a toothache can give you a headache. Pain from an inflamed, injured, or infected tooth may be referred into the head through the trigeminal pain system. The International Classification of Headache Disorders recognizes “headache attributed to disorder of the teeth” when the head pain begins or worsens with the dental problem, is provoked by the affected tooth, and improves when that problem is treated. Facial, eye, or neck swelling and trouble breathing, swallowing, or speaking require emergency care.

That is the short answer. The longer one separates referred dental pain from migraine or temporomandibular disorder (TMD), both of which can feel like tooth pain. Location alone cannot settle the question.

How can tooth pain cause a headache?

Teeth, the jaw, much of the face, and parts of the head send pain information through branches of the trigeminal system. A peer-reviewed review in The Journal of Headache and Pain describes dental pain within this wider network, where input from a tooth and nearby tissues may contribute to referred facial pain and overlap with headache-related pain. In ordinary language, the place that hurts and the tissue causing the pain can differ.

The International Headache Society’s ICHD-3 criteria support a tooth-attributed headache when at least two causal links are present. The headache may start with the tooth disorder, change as the dental problem worsens or improves, be aggravated by pressure on the tooth, or stay on the same side as a one-sided lesion. Recognized causes include infection, abscess, and inflammation around a partly erupted lower wisdom tooth.

A headache beside a toothache deserves three separate lines in an intake note:

• Write which area hurt, where the headache sat, and which symptom appeared first.
• Record what changed it: biting, temperature, jaw use, light, sound, or routine movement.
• Leave the interpretation open until examination. “Same side” is a clue; shared painkiller relief identifies no source.

What does a tooth-related headache usually feel like?

A tooth-related headache often travels with a recognizable dental complaint: continuous or throbbing tooth pain, pain on biting, sensitivity to temperature, a tender or red gum, a bad taste, or swelling of the gum, cheek, or jaw. MedlinePlus describes abscess pain as severe and continuous, with possible fever, chewing pain, gum swelling, and swelling of the upper or lower jaw.

The head pain may be on the same side as the tooth. ICHD-3 treats that as evidence when the dental disorder is unilateral. A stronger clue is reproducibility: pressure on a particular tooth worsens the familiar headache, and both symptoms rise and fall together.

A badly inflamed tooth may feel diffuse, and a headache disorder can produce facial pain. A single episode behind the eye, in the temple, or across the face should not be assigned to a tooth from location alone. Eye swelling, eye pain with swelling, or a new vision problem requires emergency assessment.

How can you tell dental pain from TMD or migraine?

Dental pain, TMD, and migraine overlap around the temple, cheek, jaw, and teeth. Their triggers and accompanying symptoms separate them better than a finger pointed at the sore spot.

| Feature | Tooth-related headache | TMD-related headache | Migraine | |---|---|---|---| | Where the evidence begins | A diseased or injured tooth or nearby gum | A painful jaw joint or chewing muscle | A primary headache disorder; some attacks include facial pain | | What tends to reproduce it | Biting, tapping, probing, or pressure on the affected tooth; heat or cold may provoke tooth pain | Chewing, opening the mouth, clenching, or other jaw use; examination may reproduce the familiar temple pain | Routine physical activity often worsens it; tooth pressure is not a defining trigger | | Companion clues | Local tooth sensitivity, red or swollen gum, bad taste, pain on chewing, or facial swelling | Jaw tenderness or stiffness, limited movement or locking, and painful clicking or grating | Pulsating, moderate or severe pain with nausea, vomiting, light sensitivity, or sound sensitivity | | Typical timing | Tracks the untreated dental problem and should improve when its cause is treated | Tracks jaw function or parafunction and may be short-lived or chronic | Untreated adult attacks last 4–72 hours under ICHD-3 criteria | | What establishes the cause | Dental examination and improvement after treatment | Jaw and muscle history and examination; selective imaging | A history matching headache criteria after secondary causes are considered |

NIDCR defines TMDs as more than 30 conditions and says they affect about 5% of U.S. adults, with variation by population and assessment method. TMD can occur with headaches. ICHD-3 says a TMD-attributed headache is commonly temporal and is aggravated by jaw motion, chewing, or bruxism, or reproduced during jaw examination.

Migraine can occupy the face. ICHD-3 describes adult migraine without aura as attacks lasting 4–72 hours, with features such as unilateral or pulsating pain, worsening with routine activity, nausea, and sensitivity to light and sound. Tooth pain during an attack does not prove tooth disease; a dental examination can check.

Can a tooth infection cause headaches?

Yes. An infection or abscess around a tooth is among the recognized causes of a tooth-attributed headache. The headache may reflect referred pain from the dental tissues, or it may accompany systemic illness when the infection is spreading. Headache by itself cannot tell those situations apart.

A dental abscess is a pocket of pus caused by infection. The NHS states that it needs urgent dental treatment and will not resolve on its own. Signs include intense tooth or gum pain, bad taste, facial or jaw swelling, fever, and difficulty opening the mouth or chewing. MedlinePlus warns that pain can stop while infection remains active; sudden relief is a poor reason to cancel a dental visit.

Antibiotics are not an automatic answer to dental pain. The American Dental Association’s evidence-based guideline recommends prioritizing definitive dental treatment for most pulpal and periapical pain and swelling. Antibiotics enter the plan when there is systemic involvement such as fever or malaise, or a high risk of progression. Drainage, root-canal treatment, or removal of the tooth may still be required because medication alone does not remove the dental source.

Which numbers should you track before calling a dentist?

Numbers make symptom reports comparable; they cannot diagnose an abscess, migraine, or TMD at home. I keep each entry in three lines: measurement, method, and change.

| Quantity | What to record | What the cited source establishes | |---|---|---| | Pain duration | The start time and the uninterrupted duration of tooth pain | The NHS advises seeing a dentist when toothache lasts more than 2 days. Earlier assessment is warranted for swelling, fever, a bad taste, bite pain, or pain uncontrolled by appropriate pain relief. | | Body temperature | The thermometer reading and where it was taken | The NHS adult-fever page defines a high temperature as 38°C (100.4°F) or above. Chills or feeling feverish still matter when the reading is lower. | | Facial swelling size | The widest visible span in centimeters, measured between the same landmarks, plus its location | A Minerva Stomatologica clinical trial used 6 tape measurements in 50 people with dental abscesses. Mean maximum dimensional changes were 2.27 cm for one mandibular measure and 6.34 cm for the sum of 5 maxillary measures. Those study values are not danger cutoffs; the NHS uses eye or neck location and impaired function for emergency triage. | | Resting headache intensity | A score while sitting quietly, before testing the tooth or jaw | The Department of Defense and Department of Veterans Affairs DVPRS is a 0–10 scale: 0 means no pain and 10 means pain as bad as it could be. Record the number rather than “bad.” | | Missed meals | The exact count since the pain began and whether liquids still go down normally | The NHS tells people with headache not to skip meals, so the target count is 0. Its toothache guidance recommends soft foods and avoiding the sore tooth. The NHS supplies no missed-meal cutoff for diagnosing infection; inability to swallow is an emergency sign. | | Jaw-opening distance | The comfortable, unassisted gap between the front teeth; never force the jaw | The DC/TMD specification uses assisted opening below 40 mm, including vertical incisal overlap, to classify one form of disc displacement as “with limited opening.” A home measurement cannot make that diagnosis. |

The swelling trial shows why “large” is an unstable intake word: researchers used fixed landmarks and calculated upper- and lower-jaw changes differently. Report centimeters, location, speed of change, and function together. Swelling beside the eye triggers emergency action regardless of width.

When is toothache with headache an emergency?

Seek emergency care now if swelling reaches the area around an eye or the neck, if an eye becomes swollen or painful, if vision changes, or if swelling makes breathing, swallowing, or speaking difficult. The NHS also lists extensive mouth swelling and major difficulty opening the mouth as emergency signs of dental abscess. Do not wait for the headache to become severe before acting on those features.

The headache itself needs emergency assessment if it begins suddenly and is extremely painful, or arrives with a seizure, new weakness or numbness, loss of vision, confusion, marked drowsiness, or trouble speaking, walking, balancing, or remembering. A very high temperature with a stiff neck or painful light sensitivity also requires emergency care under NHS headache guidance.

Arrange urgent dental care for suspected abscess, new cheek or jaw swelling, fever, bad taste with tooth pain, or trouble chewing. A toothache lasting more than 2 days needs dental assessment. Report immune suppression, pregnancy, recent dental treatment, and medicines when booking.

What can you do while waiting for dental care?

Home care can reduce discomfort while you wait; it cannot repair decay, drain an abscess, or diagnose the headache source.

1. Arrange the dental assessment first. Describe tooth pain, head pain, swelling, fever, swallowing, and vision rather than asking only for pain relief.
2. Choose soft foods such as yogurt, eggs, soup, or mashed potato. Chew away from the sore tooth and avoid very hot, very cold, or sweet foods and drinks.
3. If you can rinse safely, dissolve ½ teaspoon of salt in a glass of warm water, rinse, and spit it out. The NHS toothache instructions say not to swallow the solution.
4. Ask a pharmacist which nonprescription pain medicine is suitable and follow the product label. Pregnancy, trying to conceive, ulcers, kidney disease, anticoagulants, allergies, and other medicines can change that advice.
5. Use a soft toothbrush. Avoid flossing directly around the painful tooth if it aggravates the area, and do not place aspirin against the tooth or gum; MedlinePlus warns that direct aspirin contact can injure oral tissue.
6. Update the measurement note if symptoms change. Expanding swelling, impaired swallowing, eye involvement, or a new neurologic symptom overrides the plan to wait.

Do not puncture a swelling or take leftover antibiotics. The ADA guideline found that antibiotics offer little benefit in most dental pain and localized swelling scenarios and can cause harm. The dentist needs to identify and treat the source.

What will a dentist check when toothache and headache occur together?

The dentist will ask which symptom came first and what reproduces the pain. Examination may include inspection, controlled pressure or tapping, bite and pulp tests, and imaging. MedlinePlus notes that dental X-rays and other tests help identify the responsible tooth.

Tender chewing muscles, pain with opening, locking, or a familiar temple headache reproduced by jaw examination can direct attention toward TMD. NIDCR says there is no single widely accepted test for all TMDs; clicking alone settles nothing.

Treatment follows the finding. A dental source may require root-canal treatment, drainage, or extraction; TMD or migraine calls for a different plan. If tooth treatment leaves the headache unchanged, that mismatch should prompt reassessment rather than repeated dental procedures.

Frequently asked questions

Can a toothache cause a headache on one side?

Yes. ICHD-3 lists a headache on the same side as a unilateral tooth disorder as evidence supporting a dental cause. The link is stronger when biting or pressure on that tooth reproduces the familiar head pain and both symptoms change together. Migraine and TMD can also be one-sided, so examination still matters.

Can a tooth infection cause headaches without a fever?

Yes. A localized dental infection can produce severe tooth pain and referred head pain before fever appears, and some people never record a high temperature. Fever is a sign of systemic involvement, not a requirement for every abscess. Continuous pain, swelling, a bad taste, or bite pain still warrants urgent dental assessment.

Can toothache cause headache and eye pain?

Referred dental pain can be felt in the head or face, but eye symptoms require caution. Seek emergency care for swelling around the eye, a swollen or painful eye, or any new vision problem; the NHS lists these as emergency features of dental infection. Eye pain without swelling also deserves prompt clinical assessment.

How do I know if my headache is from a tooth?

A dental cause is more likely when the headache began with tooth pain, sits on the same side, worsens when the tooth is bitten or pressed, and improves after the tooth is treated. Those are ICHD-3 causation clues. A dentist must still look for decay, pulp disease, fracture, gum disease, or abscess.

Can wisdom teeth cause headaches?

They can when tissue around a partly erupted wisdom tooth becomes inflamed or infected. ICHD-3 names pericoronitis around a partially erupted lower wisdom tooth among common dental causes of referred head pain. Sore gum behind the last molar, bad taste, swelling, or limited opening calls for dental assessment.

Will a tooth-related headache go away after dental treatment?

It should improve when the dental cause is successfully treated; parallel improvement is part of the ICHD-3 evidence for a tooth-attributed headache. Timing varies with the condition and procedure. If tooth pain settles while the headache persists, tell the dentist or a medical clinician so migraine, TMD, or another cause can be evaluated.