Can stress cause jaw pain?

By the end of a long week your jaw aches and you realise your teeth have been pressed together for hours. Maybe you only notice the tension when you finally sit down. You are far from the only one, because for a lot of people stress shows up in the jaw.

Below I explain what large studies show about stress and jaw pain and why clenching hurts only some people. After that you get a short self-check and the approaches with the best evidence.

In short

Stress can contribute to jaw pain starting. In the OPPERA study, which followed thousands of adults without jaw problems, those reporting more stress, negative mood and body symptoms were more likely to develop a painful jaw disorder (Fillingim et al., 2013). Stress was one risk factor among several, and one likely route is clenching you never notice.

• In small phone-based studies, people under heavy stress or anxiety spent less time with a relaxed jaw and clenched more often during the day.
• For long-lasting jaw pain, a BMJ guideline strongly recommends cognitive behavioural therapy, and separately supervised jaw exercise and stretching.
• Simple reminders that help you catch clenching and return to a relaxed jaw position are a good place to start.

Does stress really cause jaw pain?

The strongest evidence comes from OPPERA, a US study that set out to find what predicts a first episode of painful TMD (temporomandibular disorder). Researchers gave 3,263 adults without jaw pain a battery of psychological questionnaires and then followed 2,737 of them for an average of 2.8 years. Perceived stress, previous life events and negative mood all predicted a new jaw disorder. The most robust predictor, though, was a broad cluster of psychological and physical symptoms across the whole body (Fillingim et al., 2013).

A ten-year OPPERA summary adds that people's own reports of jaw habits such as clenching predicted TMD far better than what an examiner could see, and worsening sleep quality came before the pain started. Variation in the COMT gene changed how strongly stress affected pain (Slade et al., 2016).

The US National Institute of Dental and Craniofacial Research agrees that a mix of genes, psychological and life stressors and how someone perceives pain may play a part in whether TMD develops and whether it lasts (NIDCR, 2026). So stress is a real contributor, and it rarely acts alone.

What happens in your jaw when you're stressed?

The most direct route is awake bruxism, meaning clenching or bracing your teeth while awake. A recent systematic review puts it at around one in four people in the general population (Graham et al., 2026). The NHS calls stress and anxiety the most common cause of teeth grinding (NHS, teeth grinding).

Researchers in Tel Aviv measured this in real time. Young adults used a phone app that asked them several times a day what their jaw was doing. A group surveyed during wartime reported a relaxed jaw in about 51 per cent of check-ins, compared with about 63 per cent in a group surveyed in peaceful times. Those with an adjustment disorder clenched and ground more, while people who bounced back well from stress spent more time with relaxed muscles (Emodi-Perlman et al., 2025).

A Brazilian study used the same kind of phone check-ins in 72 people with painful TMD. Those with high anxiety reported clenching in about 27 per cent of check-ins, against about 13 per cent in the group with normal anxiety levels, and they also had more intense pain (Medina Flores et al., 2026). Both studies show what occurs together and cannot prove that anxiety came first.

And at night?

For sleep bruxism, a 2021 review found that adults with sleep bruxism reported more stress symptoms and had higher levels of stress hormones such as cortisol and adrenaline. The authors rated the evidence as very low certainty and called for better studies (Polmann et al., 2021). If you grind at night, our teeth grinding page covers the habit in more detail.

Why doesn't clenching hurt everyone?

In a lab study, 30 healthy young adults did repeated bouts of clenching and bracing over four days. Their jaw muscles mostly felt tired, while pain was one of the lowest-rated symptoms. The authors concluded that lasting pain probably needs other risk factors on top of muscle loading (Iwata et al., 2026).

One of those factors is how sensitive your nervous system is. A review in Cephalalgia explains that peripheral factors, such as problems in the jaw muscles and joint, most likely play a role in how TMD starts, while persistent pain involves central factors such as sensitisation of nerve cells in the brainstem and spinal cord (List & Jensen, 2017). In OPPERA, pressure pain thresholds rose and fell with the onset, persistence and recovery of TMD (Slade et al., 2016).

The NHS notes that TMD pain can be worse when you feel stressed (NHS, TMD), so it can help to note when your pain flares and what was going on at the time.

Try it: the stress check for your jaw

I often show this check first in physiotherapy because it makes unconscious clenching visible. You only need a few stickers or phone reminders.

1. Notice your starting point: pause now and feel whether your teeth are touching and whether your tongue is pushing against them.
2. Set reminders: put small stickers where you look often, such as your screen, the fridge or the steering wheel, or set an hourly phone reminder.
3. Check at every reminder: are your teeth together, and do the muscles in your cheeks feel hard? Write down yes or no and what you were doing.
4. Let go: each time, move your jaw into its rest position, with your lips gently closed, your teeth slightly apart and your tongue resting softly on the roof of your mouth.
5. Review after a few days: look for patterns, for example screen work, driving or moments when you feel irritated.

If you clench more in tense situations, stress may well be part of your jaw pain. Stop if anything causes sharp pain or your jaw catches.

What helps jaw pain caused by stress?

For jaw pain lasting three months or more, an international panel published a guideline in the BMJ in 2023. It strongly recommends cognitive behavioural therapy (CBT), with or without biofeedback or relaxation, along with therapist-assisted mobilisation, manual trigger point therapy, supervised jaw exercise and stretching, and usual care such as home exercises, reassurance and education. It recommends conditionally against relaxation therapy on its own and against reversible occlusal splints (Busse et al., 2023). Our page on night guard alternatives lays out other options.

A Cochrane review of 22 trials paints a more cautious picture of CBT. It found no difference in pain right after treatment, a small reduction in pain at later follow-up and a small drop in psychological distress compared with other treatments, all with low or very low certainty (Penlington et al., 2022).

There are no official guidelines yet for daytime clenching. A systematic review of nine small studies found that most approaches tested fall under CBT, and the results suggested benefits from biofeedback, habit reversal, reminder prompts and counselling with self-management (Graham et al., 2026). Habit reversal means noticing the habit and swapping it for a relaxed jaw position, which the stress check trains.

In the moment

When you catch yourself clenching, let your teeth come apart first. The NHS advises keeping your teeth apart except when eating and gently massaging sore jaw muscles. A pack of frozen peas wrapped in a tea towel for no more than five minutes at a time, soft food and paracetamol or ibuprofen can ease a flare (NHS, TMD). Then take a few slow breaths, since the NHS lists breathing exercises among the ways to relax if you grind your teeth (NHS, teeth grinding).

Long term

What I give people takes a few minutes a day and links relaxation to jaw work:

• Rest position reminders: keep the stress check going for several weeks so letting go of your jaw becomes automatic.
• Gentle jaw exercises: open slowly with your tongue resting on the roof of your mouth, then massage in small circles in front of the ear and at the temple. Our TMJ exercises page has more routines.
• Sleep and habits: the NHS suggests a regular bedtime and cutting back on caffeine and alcohol if you grind, and the NIDCR advises reducing jaw clenching, gum chewing and nail biting (NHS, teeth grinding; NIDCR, 2026).

If stress and anxiety are making your jaw pain worse, the NHS says a GP may refer you to a psychologist (NHS, TMD).

How JawBuddy helps

JawBuddy is a digital companion for guided jaw exercises and self-management. JawBuddy Therapy includes a daily tooth contact check.

It does not replace emergency care or an individual diagnosis from a qualified healthcare professional.

When should you see a doctor?

Call 999 or 911 immediately

Jaw pain can also signal a heart problem. The NHS says to call 999 if you have chest pain that feels tight or like squeezing, chest pain spreading to your arms, neck or jaw, or severe difficulty breathing (NHS, heart attack). Do not wait to see if the pain passes. In the US, call 911.

Get an urgent appointment

The NHS advises an urgent GP appointment or a call to NHS 111 if:

• you are unable to eat or drink,
• you have difficulty opening your mouth fully or your jaw is locking,
• you have frequent, severe headaches,
• you have pain or tenderness at the side of your head or on the scalp,
• you have vision problems, such as double vision or loss of vision (NHS, TMD).

From a physiotherapist's point of view, also get checked promptly if your jaw hurts after a blow or a fall, or if fever and facial swelling come with the pain. If your symptoms have not improved after a few weeks, see a dentist or doctor. Our jaw pain page helps you sort possible causes, and if headaches come along with the jaw ache, read can TMJ cause headaches?

Your jaw is allowed to let go

When stress lands in your jaw, your body is reacting to strain in a very human way, and your own habits can make a real difference here. Start the stress check today and watch for one week when your teeth come together.

For the full picture of causes and treatment, read our TMJ disorder guide.