What are the common causes of TMJ disorder in dogs and cats?

Common causes include dental problems, joint degeneration, trauma, and local inflammation. Your vet will need imaging and an oral assessment to determine the specific cause.

How does a vet diagnose a TMJ problem?

Diagnosis typically starts with a physical examination and dental assessment, supplemented where necessary by X-rays, MRI, or histopathology to confirm the underlying cause.

What home care steps can help relieve pain?

In the short term, offer soft food in smaller, more frequent portions, film videos of eating for your vet, avoid hard objects, and keep a record of symptom changes before seeking veterinary assessment.

How long does follow-up care for a TMJ problem typically take?

It depends on the cause. Acute inflammation may improve within days to weeks; chronic conditions or those requiring surgery may need weeks to months of follow-up.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

TMJ Disorder in Dogs & Cats: Symptoms, Diagnosis & Pain Care [2025]

Jaw joint disorders affect eating and mouth opening

Take 1 minute to check the symptoms first

Last updated: 2026/01/06

Pethealthmap Editorial Team

Sources: WSAVA, AAHA, National Taiwan University Veterinary Hospital

When to See a Vet

Requires immediate veterinary care (emergency)

•Completely unable to open the mouth, accompanied by difficulty swallowing
•Sudden swelling of the face or neck that affects breathing
•Persistent heavy drooling with an inability to eat normally

Schedule a clinic visit soon (within 24–72 hours)

•Repeatedly pausing or switching chewing sides while eating
•Clear preference for soft food or eating more slowly
•Flinching or crying out when the cheek is touched

01What symptoms indicate a problem?

TMJ problems most commonly present as abnormal eating, limited mouth opening, or facial pain on touch, and may be accompanied by drooling or weight loss.

Pausing mid-chew or chewing predominantly on one side
Eating more slowly or only accepting soft food
Appearing uncomfortable or unwilling to open the mouth wide when attempting to do so
Flinching or crying out when the cheek or jaw is touched
Persistent drooling or food dropping from the mouth
Weight loss or a noticeable decrease in appetite

Seek emergency care immediately if you notice the following symptoms:

⚠️ Complete inability to open the mouth combined with difficulty swallowing
⚠️ Sudden swelling of the face or neck that affects breathing
⚠️ Continuous heavy drooling with inability to eat normally

02What should you watch for at home? Key observations and when to seek emergency care

You can start by observing eating, behaviour, and elimination at home and recording short videos — this information helps your vet assess the situation quickly.

Record changes in appetite and food type over the past three days
Film short front-on and side-on videos capturing your pet opening its mouth and eating
Note whether drool or food is falling out of the mouth
Weigh your pet and track the trend
Monitor whether energy levels and activity have noticeably decreased
Check that water intake and elimination remain normal

03How will the vet make a diagnosis? Common diagnostic tests

Your vet will begin with a physical examination and, where necessary, add imaging and laboratory tests to rule out other causes.

Physical examination

palpation of the temporomandibular joint, assessment of mouth-opening range and pain response

Dental and oral examination

to rule out dental pain or periodontal disease

Radiography (X-ray)

evaluation of the joint and surrounding bone structures

Magnetic resonance imaging (MRI)

assessment of soft tissues and the articular disc

Cytology or tissue biopsy if needed to rule out neoplasia or infection

Blood tests

assessment of overall health and markers of inflammation or infection

A referral to a facility with advanced imaging equipment or an oral-medicine specialist is recommended

04How is it treated and managed after diagnosis? Medications, dietary adjustments, and care guide

Treatment aims to control pain and inflammation, restore chewing function, and arrange follow-up care and rehabilitation according to the underlying cause.

Short-term use of pain relief and anti-inflammatory medication to manage symptoms (as directed by your vet)
Transition to soft food and smaller, more frequent meals to reduce chewing strain
Avoid letting your pet chew hard objects or engage in tug-play at home
Schedule regular recheck appointments to evaluate mouth-opening function and pain changes
Arrange rehabilitation, oral-specialist referral, or follow-up imaging as needed
If symptoms do not improve or recur, a specialist hospital evaluation is recommended

05What should you prepare before the vet visit? Key information to help your vet pinpoint the cause

Record front-on and side-on videos of your pet eating and opening its mouth

Note when symptoms started, how they have progressed, and any possible triggers

Describe which side the pain or discomfort appears to be on and the specific location

Record whether there is any facial swelling or a pain response when the area is touched

Bring any existing imaging, dental examination reports, or relevant test results

List all current medications, supplements, and any known allergies

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.

Related Symptoms (You May Also Be Looking For)

Fracture

Broken bone

Luxation

Dislocation

Vocalization

Abnormal vocalizing