Temporomandibular disorder (TMD): jaw pain explained

What is temporomandibular disorder (TMD)?

Temporomandibular disorder (TMD) (sometimes called TMJ dysfunction or TMJ disorder) affects the jaw joint, chewing muscles, and nearby structures. It may cause jaw pain, stiffness, clicking, or locking, which can make eating, speaking, and yawning uncomfortable.

Research suggests that TMD symptoms are common and can affect people of all ages. It also appears more common in females and younger age groups.

Read more: Jaw pain | TMJ headache | TMJ physiotherapy treatment

Why does TMD happen?

TMD is often multifactorial. In other words, a few things can contribute at the same time. Common contributors include:

• Jaw overuse such as clenching or teeth grinding (bruxism)
• Neck and upper back posture that increases jaw and muscle load
• Joint irritation, disc changes, or arthritis
• Previous jaw or facial trauma
• High stress, reduced sleep, and higher pain sensitivity

Read more: Neck pain | Dry needling

How is TMD diagnosed?

A physiotherapist or dentist will usually:

• Assess jaw movement, mouth opening, and tracking
• Check jaw, neck, and shoulder muscles for tenderness and tension
• Screen habits that can overload the joint (gum chewing, clenching, nail biting)
• Refer for imaging when needed (for example, when locking persists or symptoms do not settle)

People also ask: Can TMD cause ear pain or ear “fullness”? Yes, it can. Jaw and neck muscles may refer pain around the ear, and joint irritation can feel like ear pressure. Your clinician should still screen for true ear infection or other causes if symptoms are severe or unusual.

Quick self-check for TMD

▢ Jaw pain or stiffness when chewing, talking, or yawning
▢ Clicking, popping, or grinding noises in the jaw
▢ Jaw locking or catching when opening or closing
▢ Headaches, ear pain, or neck tension
▢ Teeth grinding or clenching at night
▢ Jaw tightness that worsens with stress or poor sleep

If you ticked several boxes, an assessment may help clarify what is driving your symptoms.

Read more: Headaches | Jaw pain | Neck pain

TMD treatment options

Physiotherapy (often first-line care)

• Jaw and neck mobility drills, plus progressive strengthening
• Habit and load changes (clenching awareness, chewing changes, pacing)
• Manual therapy to settle joint and muscle sensitivity
• Support with stress and sleep strategies when relevant

Self-care

• Choose softer foods during flare-ups and avoid chewing gum
• Use heat or ice for comfort (whichever feels better)
• Avoid prolonged wide opening (for example, big yawns or hard biting)

Dental support

• Night splints may help reduce clenching load for some people
• Dental care may help when bite issues or tooth problems add to symptoms

Medication support

• Short-term anti-inflammatories or muscle relaxants may be used under GP or dentist advice

Advanced options (selected cases)

• Botulinum toxin (Botox) may reduce overactive jaw muscle activity for some people, although research results vary
• Injections and procedures may be considered by your dentist or medical team when conservative care fails
• Surgery is uncommon and usually reserved for severe joint pathology

When to seek urgent care

• Sudden jaw locking that won’t release
• Significant trauma with suspected jaw fracture
• Severe swelling, fever, or signs of infection

Read more: TMJ physiotherapy treatment

What to do next

• Book an assessment to check your jaw, neck, and upper back together
• Follow a targeted plan to reduce pain, improve movement, and manage triggers
• Coordinate care with your dentist or GP if needed

FAQs

What causes TMJ dysfunction?
Common contributors include clenching or grinding, jaw overuse, stress, and neck posture. Joint irritation and arthritis can also play a part.

How do I know if I have TMD?
Jaw pain, clicking, headaches, or locking can point to TMD. A physiotherapist or dentist can assess jaw movement, muscles, and contributing factors.

Can stress cause jaw pain?
Yes. Stress can increase clenching and muscle tension, which may flare jaw symptoms.

What foods should I avoid during a flare-up?
Hard, chewy, or crunchy foods can irritate symptoms. Skip chewing gum until things settle.

How long does TMD last?
Some flare-ups settle in weeks. However, persistent symptoms often improve faster with a structured plan and sensible load changes.

Related articles

• Jaw pain
• TMJ headache
• Neck pain
• Dry needling
• Headaches
• TMJ physiotherapy treatment

References

1. Alqutaibi AY, Alhammadi MS, Hamadallah HH, et al. Global prevalence of temporomandibular disorders: a systematic review and meta-analysis. J Oral Facial Pain Headache. 2025.
2. 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.
3. 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.
4. Tavares LF, et al. Effectiveness of manual therapy and exercise therapy on otological symptoms of individuals with temporomandibular disorders: a systematic review. 2024.