Comprendre le trismus : symptômes, causes et traitements

Trismus: Causes, Symptoms, and Treatment


Trismus is a condition that affects the muscles of the jaw, making it difficult to open the mouth. It is also known as lockjaw, and it can lead to a lot of discomfort and pain. This condition can make it difficult for an individual to eat, speak, or even breathe normally. In this article, we will discuss the causes, symptoms, and treatments of trismus.

Causes of Trismus

Trismus is usually caused by a number of factors which can include:

  1. The tightening or contraction of the muscles of the jaw as a result of muscle fatigue or injury.
  2. Medications that cause constriction or tightening of the muscles of the jaw.
  3. Dental issues such as gum infections, wisdom teeth extraction, or dental surgery.

Symptoms of Trismus

The symptoms of trismus can range from mild to severe and can include:

  • Difficulty opening the mouth.
  • Pain or discomfort in the jaw or around the ears.
  • Facial swelling around the affected area.
  • Difficulty eating, speaking, or even breathing normally.

Treatment of Trismus

Treatment for trismus depends on the underlying cause. Some of the treatments for this condition can include:

  • Physical therapy, where the patient is taught how to stretch and exercise the jaw muscles.
  • Medications such as muscle relaxants can help to reduce muscle spasms and ease the pain and discomfort associated with trismus.
  • Topical treatments or injections of medications that reduce inflammation or swelling.
  • In severe cases, surgery may be required to release any scar tissue or other structures that may be preventing normal jaw movement.

Prevention of Trismus

Preventing trismus depends on the underlying cause of the condition. Here are some ways to prevent this condition:

  • To avoid dental issues, practice good dental hygiene by brushing and flossing regularly.
  • If you’re having dental surgery, follow the instructions provided by your dentist or oral surgeon to reduce swelling and prevent scarring.
  • Avoid medications that can cause muscle contraction or constriction of the muscles of the jaw.


Q: Can trismus lead to other health issues?

A: Yes, trismus can lead to other health issues such as difficulty eating or speaking, which can impact your quality of life.

Q: How long does trismus last?

A: The duration of trismus depends on the underlying cause of the condition. In some cases, it can last for just a few days, while in others, it may last for several weeks or even months.


Trismus is a painful condition that can make it difficult for an individual to open their mouth. It is usually caused by muscle fatigue or injury, medications, or dental issues. While it can be treated with physical therapy, medications, or even surgery, prevention is always better than cure. Practicing good dental hygiene and avoiding medications that can cause muscle contraction can go a long way in preventing trismus. If you’re experiencing any of the symptoms of trismus, it’s important to seek medical attention as soon as possible.