A sound or pain when you open your mouth, plus a tight neck and shoulders?
Jaw pain — it can spread through the whole body.
The dentist said nothing was wrong, yet your jaw keeps hurting and your neck and shoulders are always tight. Research shows that jaw joint dysfunction has a statistically significant association with pain in the neck, lower back, and knees.
Key summary: When the muscles around the jaw joint (masseter, temporalis) tighten, they send pain along the same nerve pathways to the neck, shoulders, and lower back. Conversely, people with lower back pain have a 1.56-fold higher risk of developing jaw joint dysfunction. That is why treating only the jaw — or only the neck and back — keeps the problem coming back.
Jaw pain — why does the whole body start to hurt?
Three studies answer this question.
Neck and shoulder muscle tenderness
Tenderness in the neck and shoulder muscles (sternocleidomastoid, upper trapezius) was found in 23–67% of patients with jaw joint dysfunction. The jaw and neck share the same nerve pathways.
Sharma et al., PMC4391655, 2015
All the way to the back, knees, and hips
Patients with jaw pain had a 2.8-fold higher risk of upper back pain, 2.0-fold for the knee, 2.1-fold for the hip and thigh, and 1.8-fold for the ankle.
Fernandes et al., PMC7480668, 2020
Back pain and jaw joint, both ways
In a 15-year follow-up study, patients with lower back pain were 1.56-fold more likely to develop jaw joint dysfunction. Treat only one side and it returns.
Chen et al., PMC7220485, 2020
Why does the jaw joint affect the whole body?
The nerve pathways overlap. The trigeminal nerve, which supplies the jaw, and the cervical nerves, which supply the neck, meet in the brainstem. A signal from one side carries over to the other, and pain spreads far from its source.
Posture is linked. In a forward head posture, the head juts forward while the jaw is pushed back. The jaw joint becomes overloaded, and to compensate, the postural pattern shifts all the way down to the lower back and knees.
The muscles are continuous. The masseter (chewing muscle), sternocleidomastoid (neck), trapezius (shoulder), and erector spinae (lower back) form one chain connected through fascia. Tension in one spot transmits to the whole chain, and it can also lead to thoracic outlet pain that links the jaw, neck, and shoulder.
If you have these symptoms together
- A click when opening the mouth, together with a stiff neck
- Tight jaw and neck every morning
- Pain on only one side when chewing, with uneven shoulders
- Headache that starts at the temples
- Jaw pain that persists even after dental treatment
- Lower back or knee pain together with jaw pain
Symptoms that need prompt care
- Sudden inability to open the mouth at all
- Severe pain with fever and swelling
- Jaw pain after an injury
Is it a TMJ problem — or another cause of jaw or ear pain?
Pain in front of the ear or around the jaw is not always a temporomandibular joint (TMJ) disorder. Trigeminal neuralgia and ear infections can produce pain in a similar area.
TMJ Disorder (TMD)
- Pain or clicking when opening the mouth or chewing
- Tenderness over the joint in front of the ear
- Mouth opening restricted or deviating to one side
- Often accompanied by neck and shoulder tension
Trigeminal Neuralgia
- Sudden, electric-shock-like pain lasting seconds to tens of seconds
- Triggered by light touch — talking, chewing, washing the face
- Clear pain-free intervals between attacks
- Far more intense than typical TMJ pain
TMJ disorders and cervical spine problems frequently coexist. Overactive jaw clenching or bruxism tightens neck muscles, and vice versa. If inner ear pain is accompanied by fever, discharge, or hearing loss, otitis media (ear infection) must be ruled out.
Our approach at Yonsei SM Pain Clinic
Jaw pain is not treated by looking at the jaw alone. With a gait and posture pattern assessment, we evaluate the connection between the neck, shoulders, and the whole body, and we work directly on the fascia and nerves.
Calm the overtensed muscles and nerves
When pain is severe or the fascia has adhered, we use ultrasound to guide an injection (Circulation HD) that releases the nerves and fascia directly. This approach quickly relieves tension at the painful area without weakening the muscle.
Activate and restore function with manual therapy
A dedicated manual therapist releases the trigger points in the masseter, temporalis, and sternocleidomastoid, and uses cervical (C0–C3) mobilization to restore the neck-jaw functional connection. Chewing and swallowing patterns are corrected as well.
Integrate it into daily life
We correct forward head posture and jaw-clenching habits, and train you together on how to keep it up in daily life.
We combine treatments based on your condition after examination
- When tension is mainly in muscle and fascia, we use manual therapy (Circulation PT).
- When there is fascial or neural adhesion, or severe pain, we combine an injection (Circulation HD) with manual therapy.
- When an occlusal or joint structure problem is at the root, we coordinate care with Arim Dental Hospital, using a splint and so on.
To learn more about the three-stage approach to jaw pain, see the full guide to Circulation Therapy.
The main muscles involved in jaw-neck referred pain
Muscles on the jaw side
- Masseter. On both sides of the jaw, used mainly when chewing.
- Temporalis. At the temples, and can trigger headaches.
- Medial pterygoid. Inside the jaw, and limits mouth opening.
- Lateral pterygoid. In front of the jaw joint, and causes clicking sounds.
Muscles on the neck side
- Sternocleidomastoid. Runs from under the jaw to the collarbone, and is linked to headaches.
- Digastric. Under the jaw, and involved in swallowing.
- Suboccipitals. At the back of the neck, and can trigger headaches.
- Longus colli. At the front of the neck, and maintains posture.
Self-care in daily life
Notice when you clench
- Set a phone alarm to check every hour
- “Lips together, teeth apart”
- Rest your tongue gently on the roof of your mouth
- Be especially careful in stressful situations
Relax the jaw muscles
- Apply a warm towel around the jaw
- Gently massage the masseter (both cheeks)
- Avoid opening the mouth too wide (watch out when yawning)
- Go easy on hard foods and chewing gum
When dental treatment is needed — we coordinate with Arim Dental Hospital
Jaw pain divides, depending on the cause, into cases that resolve with manual therapy and cases that need a dental approach (a splint, occlusal adjustment, and so on).
Arim Dental Hospital (Samseong-dong)
- Opened in 1996 — the first private practice in Korea to specialize solely in oral medicine
- Care provided directly by three oral medicine specialists
- A TMJ-focused dental hospital with a separate physical therapy room
We have a mutual referral relationship with Yonsei SM Pain Clinic. We resolve the muscle and fascial problems with manual therapy, and refer for dental procedures when they are needed.
Frequently asked questions
The dentist said nothing was wrong, so why does my jaw hurt?
Even if the bone structure looks normal on X-ray or CT, pain can arise when there is a problem with muscle, fascial, or joint function. A structural problem and a functional problem are two different things. A functional assessment is needed.
My back hurts too — will treating the jaw joint help?
Research shows a bidirectional link between jaw joint dysfunction and lower back pain. Assessing the two problems together is effective. After the examination, we decide the priorities with you.
Should I do manual therapy or a dental splint first?
If muscle and fascial tension is the main cause, manual therapy comes first. If an occlusal or joint structure problem is the main cause, a splint is needed. We decide based on the examination, and coordinate care when necessary.
Do you also do injections? Is it the same as Botox?
We inject directly into the sites of neural and fascial adhesion while watching with ultrasound (Circulation HD). Its purpose differs from Botox, which weakens the masseter (chewing muscle) to suppress grinding. Botox temporarily weakens the muscle, whereas Circulation HD releases the tensed nerves and fascia directly. If an occlusal problem is the cause, we refer to Arim Dental Hospital.
How do I fix the habit of clenching my teeth?
Unconsciously clenching your teeth during the day is the biggest aggravating factor. We combine awareness training, posture correction, and stress management. We guide you on this together during treatment.
How many treatments before I feel improvement?
It depends on how long you have had symptoms and how widespread they are. Acute muscle tension often responds quickly, while chronic cases or those with whole-body pain need a staged approach. We outline a plan after the examination.
Worth reading together
If jaw pain is spreading to your neck and shoulders
At Yonsei SM Pain Clinic by Gangnam-gucheong Station, we resolve it together with manual therapy.
Book OnlineReferences
- Sharma S et al. Jaw Dysfunction Is Associated with Neck Disability and Muscle Tenderness in Subjects with and without Chronic Temporomandibular Disorders. Biomed Res Int. 2015. PMC4391655.
- Fernandes G et al. Temporomandibular disorder, body pain and systemic diseases: assessing their associations in adolescents. Braz Oral Res. 2020. PMC7480668.
- Chen H et al. The prevalence of first-onset temporomandibular disorder in low back pain and associated risk factors: A nationwide population-based cohort study with a 15-year follow-up. J Oral Rehabil. 2020. PMC7220485.
- de Wijer A et al. Symptoms of the cervical spine in temporomandibular and cervical spine disorders. J Oral Rehabil. 1996;23(11):742–750.
- Greenbaum T et al. Cervical flexion-rotation test and physiotherapy for patients with temporomandibular disorders. Musculoskelet Sci Pract. 2017;27:101–108.
- La Touche R et al. The effects of manual therapy and exercise directed at the cervical spine on pain and pressure pain sensitivity in patients with myofascial temporomandibular disorders. J Oral Rehabil. 2009;36(9):644–652.
- Visscher CM et al. Is there a relationship between head posture and craniomandibular pain? J Oral Rehabil. 2002;29(11):1030–1036.