Jaw pain is one of the most common complaints in adults, affecting nearly 30% of the global population at some point. The cause ranges from something as simple as nighttime teeth clenching to a dental infection that needs prompt treatment. Figuring out which category your pain falls into starts with paying attention to exactly where it hurts, when it started, and what makes it worse.
The Most Likely Cause: Your Jaw Joint or Muscles
The temporomandibular joint (TMJ) sits on each side of your face, just in front of your ears, connecting your jawbone to your skull. Problems with this joint or the muscles that control it are grouped under the term temporomandibular disorders, or TMD. Pain in the chewing muscles or the joint itself is the single most common TMD symptom.
Other signs that point to TMD include jaw stiffness, limited range of motion or a jaw that locks in place, painful clicking or popping when you open wide, pain that radiates into your face or neck, and even ringing in your ears or dizziness. One reassuring detail: clicking or popping sounds without pain are considered normal and don’t need treatment.
In most cases, the exact cause of TMD isn’t clear. Injury to the jaw can trigger it, but research from the National Institute of Dental and Craniofacial Research points to a combination of genetics, psychological stress, and individual pain sensitivity as the more common drivers. Notably, a bad bite or history of braces does not appear to cause TMD, despite the widespread belief.
Teeth Grinding While You Sleep
If your jaw hurts most in the morning and eases as the day goes on, nighttime teeth grinding (bruxism) is a strong suspect. During sleep, brief arousals in your brain trigger bursts of jaw muscle activity. Over time, this repetitive clenching fatigues the large muscles on the sides of your jaw and can leave them sore, stiff, or tender to the touch.
Sleep bruxism often coexists with snoring or mild obstructive sleep apnea, and people who grind frequently may also develop TMD symptoms like joint clicking or limited opening. The connection between grinding and full-blown TMD is debated in the research, but the muscle soreness itself is real and common. A dentist can usually spot the telltale wear patterns on your teeth and may recommend a custom night guard to absorb the force.
Dental Infections and Tooth Problems
Jaw pain that feels like a severe, constant, throbbing ache, especially one that started near a specific tooth, could signal a dental abscess. An abscess is a pocket of infection at the root of a tooth or in the gum tissue, and its pain often spreads into the jawbone, neck, or ear. Two distinguishing clues: the pain gets worse with hot or cold foods and drinks, and biting down on the affected side intensifies it. This type of jaw pain won’t resolve on its own and needs dental treatment to clear the infection.
Stress and Daytime Clenching
Many people clench their jaw or tense their facial muscles during the day without realizing it, particularly during stressful tasks, long commutes, or intense focus at a screen. This sustained muscle tension produces a dull, achy soreness that builds through the afternoon and evening. A simple awareness check can help: set a few reminders on your phone throughout the day and, each time one goes off, notice whether your teeth are touching. At rest, your lips should be together but your teeth should be slightly apart, with your tongue resting gently on the roof of your mouth.
Home Relief That Actually Helps
For mild to moderate jaw pain, a few days of targeted self-care can make a significant difference.
Cold therapy works best for sharp or severe pain. Wrap ice or a gel pack in a thin towel and hold it against the sore area for 10 to 20 minutes. Never place ice directly on the skin. Moist heat is better for general muscle soreness. A warm, damp towel applied to the jaw muscles for 10 to 20 minutes helps relax tension and improve blood flow. You can alternate between the two as needed.
Soft foods take pressure off the joint and muscles while they recover. Avoid chewy foods like bagels or steak, skip the gum, and try not to open your mouth wider than necessary (including for big yawns).
Jaw Exercises Worth Trying
The Cleveland Clinic recommends several gentle exercises you can do at home, repeating each one several times per session:
- Jaw relaxation: Touch your tongue to the roof of your mouth behind your front teeth, then slowly open and close your mouth.
- Chin tucks: Stand with your back against a wall and pull your chin straight back toward the wall, creating a “double chin.” Hold for three to five seconds.
- Resisted opening: Place your thumb under your chin and gently press upward as you slowly open your mouth. Hold for three to five seconds before closing.
- Side-to-side movement: Place a thin object like a craft stick between your front teeth, then slowly slide your jaw from side to side.
These exercises build coordination and strength in the muscles around the joint. They should feel like a gentle stretch, not painful. If any movement increases your pain, stop and try again in a few days.
When Jaw Pain Needs Urgent Attention
Most jaw pain is manageable and temporary, but a few situations call for immediate action. If the pain spreads from your chest or shoulders into your jaw, call 911. That pattern can signal a heart attack, particularly in women, where jaw pain is a more common heart attack symptom than many people realize. A jaw that appears visibly misaligned, won’t close, or resulted from a blow to the face may be broken or dislocated, which also requires emergency care.
Outside of emergencies, jaw pain that persists for more than a week without improvement warrants a visit to your doctor or dentist. They can determine whether the issue is muscular, joint-related, or dental, and point you toward the right treatment, whether that’s a night guard, physical therapy, or addressing an underlying infection.