Trismus
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD's weight loss doctor NYC
Philadelphia GLP-1 weight loss and GLP-1 clinic NYC
| Trismus | |
|---|---|
| File:Lockjawsymptoms.jpg | |
| Synonyms | Lockjaw |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Reduced ability to open the mouth |
| Complications | Malnutrition, dehydration, aspiration pneumonia |
| Onset | Sudden or gradual |
| Duration | Varies |
| Types | N/A |
| Causes | Tetanus, pericoronitis, oral submucous fibrosis, trauma, infection |
| Risks | Oral surgery, radiation therapy, head and neck cancer |
| Diagnosis | Physical examination, imaging studies |
| Differential diagnosis | Temporomandibular joint disorder, mumps, sialadenitis |
| Prevention | N/A |
| Treatment | Physical therapy, medication, surgery |
| Medication | Muscle relaxants, analgesics, antibiotics |
| Prognosis | N/A |
| Frequency | Common in certain conditions |
| Deaths | N/A |
Trismus, commonly referred to as lockjaw, is a condition characterized by reduced ability to open the mouth due to muscle spasm, inflammation, or fibrosis. It is often associated with temporomandibular joint disorder (TMJ) and can be a symptom of various underlying conditions.
Causes[edit]
Trismus can result from a variety of causes, including:
- Infection: Such as tetanus, which is a bacterial infection that affects the nervous system and leads to muscle stiffness.
- Trauma: Injury to the jaw or surrounding tissues can lead to muscle spasm and trismus.
- Surgery: Post-surgical complications, especially after procedures involving the mouth, jaw, or throat.
- Radiation therapy: Treatment for head and neck cancers can lead to fibrosis and trismus.
- Inflammation: Conditions such as pericoronitis or arthritis affecting the jaw joint.
Symptoms[edit]
The primary symptom of trismus is the inability to fully open the mouth. Other symptoms may include:
- Pain in the jaw or surrounding areas
- Difficulty speaking or eating
- Muscle stiffness
- Headache
Diagnosis[edit]
Diagnosis of trismus involves a thorough medical history and physical examination. Imaging studies such as X-ray, CT scan, or MRI may be used to assess the underlying cause. A dental examination may also be necessary to evaluate the condition of the teeth and jaw.
Treatment[edit]
Treatment of trismus depends on the underlying cause and may include:
- Physical therapy: Exercises to improve jaw mobility.
- Medication: Pain relievers, muscle relaxants, or anti-inflammatory drugs.
- Surgery: In severe cases, surgical intervention may be required to release the muscle spasm or correct structural issues.
- Botulinum toxin injections: To reduce muscle spasm.
Prevention[edit]
Preventive measures for trismus include:
- Maintaining good oral hygiene to prevent infections.
- Regular dental check-ups.
- Avoiding trauma to the jaw.
- Following post-operative care instructions after dental or surgical procedures.
