Temporomandibular Disorder (TMD)
Jaw pain, clicking, locking, headaches and other TMJ symptoms explained.
Jaw movement assessment can help identify factors contributing to TMD symptoms.
Temporomandibular disorder, commonly shortened to TMD, affects the jaw joints, chewing muscles and related structures around the head and neck. Symptoms may include jaw pain, stiffness, clicking, locking, headaches, facial pain, ear symptoms or difficulty chewing.
TMD is often multifactorial. Several issues may contribute at the same time, including jaw loading, clenching, sleep, stress, neck function, joint irritation and dental factors. A careful assessment can help identify which factors are most relevant to your symptoms.
Related information includes common causes of jaw pain, TMJ-related headaches and physiotherapy treatment for jaw pain.
What Is Temporomandibular Disorder?
The temporomandibular joints sit in front of each ear and connect your lower jaw to your skull. They work with the chewing muscles to help you talk, bite, chew, swallow and yawn.
TMD describes pain or dysfunction involving one or both jaw joints, the chewing muscles or the way these structures work together. Symptoms can vary considerably. Some people mainly notice muscle tightness. Others experience joint pain, reduced opening, clicking, catching or locking.
Pain
Jaw, temple, cheek, facial, ear-region or upper-neck discomfort.
Movement
Stiffness, limited mouth opening, uneven tracking, catching or locking.
Joint sounds
Clicking, popping, grating or other noises during jaw movement.
What Are Common TMD Symptoms?
TMD symptoms often change with chewing load, stress, sleep and jaw habits. Common features include:
- jaw pain or stiffness when chewing, talking or yawning;
- clicking, popping or grinding noises in the jaw;
- reduced or uneven mouth opening;
- jaw catching or locking;
- aching around the temples, cheeks or ears;
- headaches or neck tension;
- jaw fatigue when eating firmer foods; and
- symptoms associated with clenching or teeth grinding.
Why Does TMD Happen?
TMD rarely has one simple cause. The relative importance of each contributor also differs between people.
Jaw loading and habits
Clenching, grinding, frequent gum chewing, nail biting or repeatedly opening the mouth widely can increase load on the jaw joints and muscles.
Joint and muscle factors
Joint irritation, disc movement, arthritis, muscle sensitivity or previous jaw and facial trauma may contribute.
Neck and movement factors
The jaw, head and upper neck work together. For some people, reduced neck movement or sustained postures may influence symptoms.
Stress, sleep and pain sensitivity
Stress and disrupted sleep can increase clenching, muscle tension and sensitivity. These factors may prolong or amplify a flare-up.
People with associated neck symptoms may also find the neck pain guide useful.
How Is TMD Assessed?
A physiotherapist or dentist will usually begin by discussing the location, behaviour and duration of your symptoms. They may ask about chewing, clicking, locking, dental history, clenching, sleep, headaches, neck symptoms and any previous injury.
An assessment does not rely on a jaw sound alone. It considers whether the symptom is painful, reproducible and linked with reduced movement or function.
TMD assessment may include jaw tracking, mouth opening, muscle tenderness and neck movement.
Your assessment may include
- measuring comfortable and maximum mouth opening;
- checking jaw movement from side to side;
- watching whether the jaw tracks evenly or deviates;
- examining the jaw joints and chewing muscles;
- checking neck movement and relevant muscle sensitivity;
- reviewing clenching, grinding, chewing and sleep habits;
- considering headache, dental, ear or nerve-related symptoms; and
- deciding whether dental, medical or imaging review is appropriate.
What Treatments May Help TMD?
Treatment should match your symptom pattern, contributing factors and goals. Conservative care is usually considered before injections or surgery.
Physiotherapy
Physiotherapy may help selected people improve jaw and neck movement, reduce sensitivity and change activities or habits that overload the area. A treatment plan may include:
- education about the condition and likely contributors;
- jaw movement and coordination exercises;
- neck mobility and postural movement strategies;
- graded jaw or neck strengthening where appropriate;
- temporary changes to chewing and daily jaw load;
- manual therapy for selected joint or muscle findings;
- clenching awareness and relaxation strategies; and
- sleep, stress and pacing advice when these factors are relevant.
Some physiotherapists may use dry needling as one part of treatment when it suits the assessment findings. It should not replace movement, education or load-management strategies.
Dental care
A dental assessment may be useful when tooth pain, significant tooth wear, bite concerns or night-time grinding may contribute. A dentist may consider a splint for selected people. Splints do not suit every presentation and should be fitted and reviewed appropriately.
Medication and medical support
A GP or dentist may recommend short-term medication for some presentations. Suitability depends on your medical history, other medicines and the likely cause of the symptoms.
Injections and surgical care
Botulinum toxin injections are sometimes considered for persistent muscle-related symptoms, although research findings and individual responses vary. Surgery is uncommon and is generally reserved for significant joint disease, trauma or persistent mechanical problems after appropriate specialist review.
What Can You Do During a TMD Flare-Up?
Temporary load reduction can make eating and daily activity more comfortable while symptoms settle.
-
Reduce aggravating chewing
Choose softer foods for a short period and cut firmer food into smaller pieces.
-
Pause gum and repetitive habits
Avoid chewing gum, biting nails and repeatedly testing a click or painful movement.
-
Limit prolonged wide opening
Support the jaw during large yawns and avoid forcing the mouth open.
-
Use comfortable heat or cold
A short application may help comfort. Protect your skin and stop if symptoms worsen.
-
Relax the resting jaw position
Let your lips rest together while keeping your upper and lower teeth slightly apart.
These measures provide temporary symptom support. They do not replace assessment when pain, locking or functional difficulty persists.
When Should You Seek Urgent Care?
Also arrange assessment when jaw pain is persistent, worsening, interfering with nutrition or sleep, or accompanied by unexplained weight loss or a new lump.
Controlled jaw exercises may form part of an individual TMD treatment plan.
What Should You Do Next?
Consider an assessment when jaw pain, restricted movement, headaches, locking or difficulty chewing keeps returning. Your physiotherapist can assess the jaw, neck and relevant movement factors, then explain whether physiotherapy may suit your presentation.
Assess
Clarify which jaw, muscle, neck and lifestyle factors may contribute.
Plan
Select practical treatment, exercises and short-term load changes.
Coordinate
Involve your dentist, GP or another clinician when the presentation requires it.
For more detail about the physiotherapy process, read how physiotherapy may help TMJ and jaw pain.
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FAQs About Temporomandibular Disorder
What causes TMJ dysfunction?
Common contributors include clenching, grinding, jaw overuse, stress, sleep disruption and neck factors. Joint irritation, disc changes, arthritis or previous trauma may also play a part. Many people have several contributing factors rather than one single cause.
How do I know if I have TMD?
Jaw pain, clicking, stiffness, headaches, facial pain, ear-region symptoms or locking may suggest TMD. A physiotherapist or dentist can assess jaw movement, chewing muscles, neck function and habits that may increase jaw load.
Can TMD cause headaches or ear pain?
Yes. TMD symptoms may be felt in the temples, head, face, neck or around the ear. Some people also notice ear fullness or pressure. Severe, unusual or worsening ear symptoms still require assessment to rule out another cause.
Can stress cause jaw pain?
Stress may increase clenching, grinding and chewing-muscle tension. It can also affect sleep and pain sensitivity. Stress management may form part of treatment, but it does not replace assessment of other contributors.
What foods should I avoid during a flare-up?
Hard, chewy, crunchy or sticky foods may increase jaw load. Softer foods can be more comfortable for a short period. Avoid chewing gum while symptoms are irritated, then return gradually to your usual diet as comfort improves.
Should I see a dentist or physiotherapist for TMD?
Either may be appropriate. A dentist can assess dental pain, tooth wear and whether a splint may help. A physiotherapist can assess jaw movement, chewing muscles, neck function and movement habits. Persistent or complex symptoms may benefit from coordinated care.
How long does TMD last?
Some flare-ups settle within several weeks when irritating loads reduce. Symptoms may persist when clenching, neck pain, poor sleep, stress or joint irritation remains active. Recovery time varies, so ongoing or worsening symptoms should be assessed.
References
- Alqutaibi AY, Alhammadi MS, Hamadallah HH, et al. Global prevalence of temporomandibular disorders: a systematic review and meta-analysis. Journal of Oral & Facial Pain and Headache. 2025.
- Busse JW, Casassus R, Carrasco-Labra A, et al. Management of chronic pain associated with temporomandibular disorders: a clinical practice guideline. BMJ. 2023;383:e076227. doi:10.1136/bmj-2023-076227.
- Saini RS, Almoyad MAA, Binduhayyim RIH, et al. The effectiveness of botulinum toxin for temporomandibular disorders: a systematic review and meta-analysis. PLoS One. 2024;19(3):e0300157. doi:10.1371/journal.pone.0300157.
- Tavares LF, Calixtre LB, et al. Effectiveness of manual therapy and exercise therapy on otological symptoms of individuals with temporomandibular disorders: a systematic review. 2025.
