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Jaw muscle spasms can be caused by a variety of factors, including overuse, injury, arthritis, and stress. Overuse can come in the form of gum chewing, nail-biting, or even cheek biting. Certain medical conditions, such as fibromyalgia, calcium deficiency, and otitis externa (swimmer's ear), can also cause jaw spasms. In some cases, the spasms may be a symptom of an underlying condition such as Meige syndrome, a rare movement disorder that causes frequent, uncontrollable spasms in the eye, jaw, tongue, and lower facial muscles. Additionally, issues with the temporomandibular joints (TMJ) can lead to jaw muscle spasms. These issues may include dislocation of the disc between the jawbone condyle and the socket, inflammation, or degeneration of the joint.
| Characteristics | Values |
|---|---|
| Medical conditions | Fibromyalgia, calcium deficiency, otitis externa (swimmer's ear), arthritis |
| Habits | Gum chewing, nail biting, cheek biting, teeth grinding, pen biting, ice chewing |
| Emotional state | Stress, anxiety |
| Environmental factors | Cold weather |
| Joint problems | Dislocation of the disc between the jawbone condyle and the socket, clicking, popping, locking |
| Neurological conditions | Meige syndrome, dystonia |
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What You'll Learn
Stress, teeth grinding, gum chewing, and nail biting
Stress can cause your jaw muscles to tighten, which reduces blood flow and the delivery of oxygen. Over time, this lack of blood flow can result in jaw muscle soreness, spasm, pain, and fatigue. Stress can also cause teeth grinding, also known as bruxism, which can lead to jaw muscle spasm and pain.
Teeth grinding or bruxism can cause muscle spasm in the jaw. It can occur during sleep or while awake and can cause symptoms like headaches, facial pain, sore jaw muscles, tinnitus, pain when eating, and difficulty opening and closing the mouth. Left untreated, bruxism can cause jaw pain and dental damage.
Gum chewing involves constant activation of the temporomandibular joint (TMJ) and can result in jaw muscle pain, soreness, and fatigue. It can also cause joint instability and arthritic changes to the joint.
Nail biting is a stress-induced behavior that can cause TMJ jaw problems. It is an oral parafunctional behavior that can lead to jaw pain and muscle spasm.
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Arthritis and other joint issues
TMJ disorders can cause muscle spasms and chronic neurologic pain. This pain is often felt on the entire side of the lower face and may extend up towards the ears, temples, and scalp. It can worsen after chewing and cause the jaw to lock in an open or closed position. TMJ disorders can be caused by overuse, such as teeth grinding, gum chewing, or nail-biting, as well as stress and cold weather. Conservative, non-surgical treatments are usually the first line of management for TMJ disorders. This includes rest, muscle massage, and the use of a bite splint to relax the muscles.
Osteoarthritis, the "wear and tear" degeneration of joints, can also affect the TMJ. This can lead to progressive limitations in jaw movement, changes in teeth occlusion, and grating sounds. Joint problems can also involve the dislocation of the disc between the jawbone condyle and the socket, resulting in clicking or popping sounds, limited jaw movement, and pain. Over time, the disc can become permanently deformed or perforated, leading to degenerative arthritis of the joint.
In addition to arthritis, other joint issues can contribute to jaw muscle spasms. For example, missing posterior teeth can place excessive strain on the jaw muscles and joints, contributing to TMJ disorders. Furthermore, bruxism, or teeth grinding, can affect the TMJ and cause jaw pain and muscle spasms.
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Neurologic pain disorders
TMJ disorders are characterised by problems with the temporomandibular joint, a small joint located in front of the ear where the skull and lower jaw meet. This joint is delicate, and overuse from everyday wear and tear, grinding, injury, or arthritis can cause inflammation and damage, leading to painful jaw movements. Determining the cause of TMJ problems is critical, as they can fall into three broad categories: spasm of the jaw muscles, issues with the actual jaw joint structures, and chronic neurologic pain.
Chronic neurologic pain associated with TMJ disorders can be caused by nerve inflammation. This inflammation can be a result of underlying conditions such as fibromyalgia, calcium deficiency, otitis externa (swimmer's ear), or trigeminal neuralgia. Trigeminal neuralgia specifically causes facial pain and spasm, and it is important to differentiate it from TMJ disorders to receive proper treatment.
The treatment for neurologic pain disorders typically involves conservative, non-surgical methods, and appropriate medications. Initial management often includes rest, muscle massage, and the use of a bite splint to help relax the muscles. Traditional medications such as Amitriptylene and Nortriptylene have been proven effective in cases of neurologic pain, and lower doses of these medications can also have an anti-anxiety effect and relax muscles.
It is important to consult with a healthcare provider or dentist to determine the underlying cause of jaw spasms and receive an accurate diagnosis. Specialists such as oral and maxillofacial surgeons or neurologists who treat facial pain can provide guidance on specific conditions and appropriate treatments.
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Medical conditions, including fibromyalgia and calcium deficiency
Jaw muscle spasms can be caused by several factors, including certain medical conditions such as fibromyalgia and calcium deficiency.
Fibromyalgia
Fibromyalgia is a condition that causes severe pain and fatigue, often disrupting sleep. It is more common in women than in men, and it tends to run in families. The pain associated with fibromyalgia can be widespread, occurring on both sides of the body and above and below the waist. For those with fibromyalgia, even simple tasks like chewing, yawning, or talking can result in agonizing facial and jaw pain. This pain can lead to bracing of the jaw muscles, causing muscle fatigue and a limited range of motion in the jaws. The condition can be managed through various treatments, including meditation, restorative yoga, certain medications, and dermal filler injections combined with jaw motion exercises.
Calcium Deficiency
Calcium is essential for many bodily functions, including muscle contraction. A calcium deficiency, or hypocalcemia, can lead to muscle aches and fatigue. It occurs when blood calcium levels are too low, often due to low levels of parathyroid hormone or vitamin D. Long-term calcium deficiency can have severe consequences, including dental changes, cataracts, alterations in the brain, and osteoporosis. Treatment for calcium deficiency typically involves dietary adjustments, such as increasing calcium-rich foods or taking calcium supplements. In severe cases, calcium injections may be prescribed.
It is important to note that jaw muscle spasms can also be caused by other factors, such as teeth clenching or grinding, gum chewing, stress, or cold weather. If you are experiencing jaw muscle spasms, it is advisable to consult a healthcare professional for a proper diagnosis and treatment plan.
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Meige syndrome, a rare movement condition
Meige syndrome is a rare movement condition that causes frequent spasms of the eye, jaw, tongue, and lower facial muscles. It is a form of dystonia—a group of conditions that cause uncontrollable muscle movements. The spasms may feel like a stabbing sensation, similar to an electric shock, and can be painful. The condition is also known as Brueghel's syndrome, oral facial dystonia, and segmental cranial dystonia.
The symptoms of Meige syndrome usually begin between the ages of 30 and 70 years old and appear to be more common in women than in men, with a 2:1 ratio. The specific symptoms and their severity vary from case to case. The main symptoms involve involuntary blinking and chin thrusting. Some patients may experience excessive tongue protrusion, squinting, light sensitivity, muddled speech, or uncontrollable contraction of the platysma muscle. Other symptoms include facial grimacing, involuntary chin jerks (usually while talking or eating), jaw twitching, jaw pain, difficulty opening or closing the mouth, a clenched mouth, and grinding teeth (bruxism).
Meige syndrome is a rare neurological condition that affects the brain and nerves. It causes muscle spasms that are uncontrollable. These spasms can force the body into abnormal, sometimes painful, movements and positions. The exact cause of Meige syndrome is unknown, but it is believed to be a combination of genetic and non-genetic factors. In some cases, Meige syndrome can be reversed when it is caused by medication.
The condition is commonly misdiagnosed, and most doctors will not be familiar with it due to its rarity. A neurologist specializing in psychomotor disorders can typically detect Meige's syndrome. There are currently no technological diagnostic tools for Meige's syndrome, as it cannot be identified through blood chemistry analysis or radiological imaging such as MRI or CT scans. However, a diagnostic sign that can help differentiate it from acute dystonia is that patients with idiopathic Meige's syndrome do not respond quickly to anticholinergic drug treatments.
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Frequently asked questions
Some common causes of muscle spasms in the jaw include bruxism (teeth clenching or grinding), gum chewing, cheek or nail biting, stress, and cold weather.
Some less common causes of muscle spasms in the jaw include arthritis, jaw injuries, connective tissue diseases, fibromyalgia, calcium deficiency, and otitis externa (swimmer's ear).
Jaw muscle spasm symptoms can range from mild to severe and may include chattering teeth, pain, and restricted movement or locking of the jaw.
Jaw muscle spasms can be treated through massage, muscle relaxants, acupuncture, speech therapy, and in more severe cases, botulinum toxin injections or deep brain stimulation.
