Ludwig's Angina
A rapidly spreading infection of the mouth floor and neck
Quick Facts
- Type: Serious soft-tissue infection
- Main cause: Spread from a tooth infection
- Key danger: Swelling that can block the airway
- Action: Medical emergency, seek care immediately
Overview
Ludwig's angina is a medical emergency. If you suspect it, seek emergency care immediately, especially if breathing becomes difficult.
Ludwig's angina is a severe bacterial infection that involves the soft tissues under the tongue and the floor of the mouth, and spreads through the spaces of the neck. The name refers to the tightness and choking feeling it can cause, not to heart-related angina.
As the infection spreads, swelling can push the tongue up and back and narrow the airway, which can quickly become life-threatening. It most often arises from an untreated tooth infection. With prompt antibiotics, airway protection, and sometimes surgery, the infection can be controlled.
Symptoms
- Swelling, firmness, and tenderness under the jaw and tongue
- Pain in the mouth or neck and a swollen, raised tongue
- Difficulty swallowing, speaking, or opening the mouth
- Drooling and difficulty managing saliva
- Fever, chills, and feeling generally unwell
- Difficulty breathing or a muffled, hot-potato voice, which are danger signs
Trouble breathing, stridor (a high-pitched sound when breathing in), or inability to swallow saliva are emergencies.
Causes
Ludwig's angina is usually caused by bacteria spreading from a nearby source:
- Dental infections: An infected or abscessed tooth, especially in the lower jaw, is the most common cause.
- Mouth or throat infections and injuries: Including infections of the salivary glands, mouth sores, or trauma.
- Recent dental or mouth procedures in some cases.
Risk Factors
- Untreated tooth decay or dental infections
- Poor oral hygiene
- Diabetes or a weakened immune system
- Recent dental work or mouth injury
Diagnosis
Doctors often recognize Ludwig's angina from the rapid, firm swelling of the floor of the mouth and neck together with fever and difficulty swallowing. Evaluation may include:
- Examination of the mouth, neck, and airway.
- Imaging such as CT scans to see the extent of the infection.
- Blood tests to assess infection.
Protecting the airway takes priority and may begin before all tests are completed.
Treatment
Treatment is urgent and usually requires hospital care:
- Airway protection: The top priority, sometimes requiring a breathing tube or other procedure to keep the airway open.
- Intravenous antibiotics: Strong antibiotics to fight the infection.
- Drainage: Surgery to drain pus and relieve swelling when needed.
- Treating the source: Removing or treating the infected tooth once it is safe.
- Close monitoring in the hospital, often in an intensive care setting.
Prevention
- Maintain good oral hygiene with regular brushing and flossing
- See a dentist promptly for tooth pain, decay, or gum problems
- Do not ignore dental infections or abscesses
- Manage diabetes and other conditions that weaken the immune system
When to See a Doctor
Seek emergency care immediately if you have rapidly worsening swelling under the tongue or jaw with fever, a swollen or raised tongue, drooling, difficulty swallowing, a muffled voice, or any trouble breathing. These can signal Ludwig's angina, which can block the airway quickly. Do not wait, as this condition can become life-threatening within hours.
Frequently Asked Questions
Is Ludwig's angina related to heart angina?
No. Despite sharing the word angina, Ludwig's angina is a serious infection of the floor of the mouth and neck, not a heart problem. The name refers to the tight, choking sensation the swelling can cause.
Why is Ludwig's angina dangerous?
As the infection swells the tissues under the tongue and in the neck, it can push the tongue back and narrow the airway, making breathing difficult. This can become life-threatening quickly, which is why it is treated as a medical emergency.
What causes Ludwig's angina?
It most often spreads from an untreated or abscessed tooth, especially in the lower jaw. Other mouth and throat infections, injuries, or recent dental procedures can also lead to it, particularly in people with diabetes or a weakened immune system.
How is Ludwig's angina treated?
Treatment requires urgent hospital care focused first on protecting the airway, along with strong intravenous antibiotics, surgical drainage of pus when needed, and treating the source such as an infected tooth. People are usually monitored closely, sometimes in intensive care.
References
- MedlinePlus, U.S. National Library of Medicine. Ludwig angina.
- StatPearls, National Library of Medicine. Ludwig Angina.
- American Dental Association. Dental infections and oral health.