Unilateral (one-sided) jaw swelling is often caused by dental infections, salivary gland problems (blocked duct or infection), lymph node enlargement, or TMJ disorders affecting that specific side. A dental abscess is a common culprit. This requires professional evaluation to determine the exact cause.

While stress doesn't directly cause jaw swelling, it can contribute through jaw clenching (bruxism) and teeth grinding, which leads to muscle fatigue, inflammation, and temporomandibular joint strain. Stress also weakens immune response, making infections more likely. Managing stress through relaxation techniques can help reduce jaw tension.

Duration depends on the cause. Mild TMJ inflammation may improve within 1-2 weeks with rest and ice. Dental abscesses require treatment and may improve within days of antibiotics. Allergic reactions often resolve within 24-72 hours with antihistamines. Chronic conditions require ongoing management.

While rare, persistent jaw swelling that doesn't resolve with standard treatment warrants investigation for tumors or cysts. However, the vast majority of jaw swelling cases are due to benign conditions like infections, dental problems, or inflammatory disorders. Always have persistent swelling evaluated by a healthcare professional.

Yes, dental infections are one of the most common causes of jaw swelling. An abscessed tooth can cause significant swelling that may spread to the face and neck. This requires prompt dental treatment - often root canal or extraction - along with antibiotics. Without treatment, the infection can spread dangerously.

Impacted wisdom teeth (third molars) can cause jaw swelling when they become infected (pericoronitis) or develop cysts. The gum tissue around partially erupted wisdom teeth can trap food and bacteria, leading to inflammation and swelling. This often requires dental evaluation and possibly removal of the wisdom tooth.

Yes, allergic reactions can cause significant facial and jaw swelling, known as angioedema. This can result from food allergies, medication reactions, insect bites, or environmental allergens. The swelling may develop rapidly and can be life-threatening if it affects breathing. Seek emergency care for rapid or severe allergic swelling.

Seek medical attention if: swelling persists more than a few days, it's accompanied by fever, you have difficulty opening your mouth or swallowing, the swelling is rapidly worsening, there's facial numbness, or you suspect a dental infection. For severe allergic reactions with breathing difficulty, call emergency services immediately.