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Why Does My Left Jaw Hurt?

Published in Jaw Pain 3 mins read

Jaw pain, especially on one side like your left, can stem from a variety of causes. While it's usually not a major cause for concern, it's important to understand the possible reasons behind the discomfort. Here are some of the most common culprits:

  • Sinusitis: Inflammation of the sinuses can cause pain that radiates to the jaw, especially on one side.
  • Oral Health Issues: Problems like tooth decay, impacted teeth (especially wisdom teeth), or gum disease can lead to localized jaw pain.
  • Temporomandibular Joint (TMJ) Disorders: The TMJ connects your jaw to your skull. Problems with this joint, such as arthritis, dislocation, or teeth grinding, can cause pain on one or both sides of the jaw.
  • Tumors and Cysts: Although less common, tumors or cysts in the jaw area can also cause pain.

Here's a more detailed breakdown:

Possible Causes of Left Jaw Pain

To understand why your left jaw hurts, consider the following possibilities:

  • Muscular Issues: Muscle tension or spasms in the jaw muscles (masseter, temporalis) due to stress, clenching, or grinding your teeth (bruxism) can lead to pain localized on the left side.
  • Dental Problems:
    • Tooth Abscess: An infection in a tooth can spread to the surrounding bone and tissues, causing significant pain in the jaw.
    • Tooth Decay: Severe decay can irritate the nerves in the tooth root, radiating pain to the jaw.
    • Impacted Wisdom Tooth: If a wisdom tooth is trying to erupt but is blocked, it can cause pain, swelling, and pressure in the jaw.
  • Joint Problems:
    • TMJ Dysfunction: This involves problems with the temporomandibular joint itself, its surrounding muscles, ligaments, and the disc between the bones. This can cause pain, clicking or popping sounds when you open or close your mouth, and limited jaw movement.
  • Infections:
    • Osteomyelitis: A bone infection in the jaw can cause intense pain and swelling.
    • Salivary Gland Infection: An infection in the salivary glands (located near the jaw) can cause pain and swelling, often worsened by eating.
  • Nerve Problems:
    • Trigeminal Neuralgia: This condition affects the trigeminal nerve, which carries sensation from your face to your brain. It can cause sudden, severe, stabbing pain in the jaw.
  • Referred Pain: Pain originating from another area, such as the neck or ear, can be referred to the jaw.
  • Less Common Causes: Tumors (benign or malignant), cysts, or vascular problems (e.g., temporal arteritis).

When to See a Doctor

While some jaw pain may resolve on its own, it's essential to seek medical attention if:

  • The pain is severe or persistent.
  • You have difficulty opening or closing your mouth.
  • You experience swelling, redness, or tenderness in the jaw area.
  • You have a fever or other signs of infection.
  • The pain is accompanied by other symptoms, such as headache, earache, or neck pain.

A doctor or dentist can help diagnose the cause of your left jaw pain and recommend appropriate treatment.

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