Athena Vale
Muscle tremors are involuntary, unintentional shaking or trembling movements that can occur in one or more parts of the body. They are not life-threatening but can cause challenges and disrupt daily activities such as writing, eating, and dressing. Tremors can be caused by various factors, including stress, fatigue, certain postures, and specific movements. They can also be triggered by dietary stimulants like caffeine, certain medications, or neurological disorders. To stop muscle tremors, it is essential to identify the underlying cause through diagnostic tests and consult a healthcare provider for appropriate treatment. Treatments may include medications, botulinum toxin injections, deep brain stimulation, or focused ultrasound procedures.
| Characteristics | Values |
|---|---|
| Type | Essential tremor, Parkinsonian tremor, orthostatic tremor, postural tremor, isometric tremor, intention tremor, task-specific tremor, dystonic tremor |
| Causes | Inherited, neurologic disorders, certain medicines, poisoning from toxic substances, stress, strong emotion, physical tiredness, caffeine, specific movements, brain damage |
| Diagnosis | MRI, CT, PET, SPECT, electromyogram (EMG), genetic testing, brain imaging |
| Treatment | Botulinum toxin, deep brain stimulation, focused ultrasound, medication, radiofrequency ablation, adaptive devices |
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What You'll Learn
Identify the type of tremor
Tremors are categorised based on when and how they are activated. The two main categories are rest and action tremors. Rest tremors occur when people are at rest, and action tremors occur when a muscle is moved voluntarily.
Action tremors can be further subdivided into postural, isometric, and kinetic tremors. Postural tremors occur when holding a position against gravity, such as keeping the arms outstretched. Kinetic tremors are associated with any voluntary movement, such as moving the wrists up and down. Isometric tremors occur during a voluntary muscle contraction that does not result in movement, for example, holding a heavy book in the same position.
The most common pathologic tremor is essential tremor, which affects 0.4% to 6% of the population. It is usually a problem when using the hands but can also affect the head, voice, face, and trunk. It is more common as people age and tends to run in families. It can be treated with beta-blocking drugs, botulinum toxin, deep brain stimulation, and focused ultrasound.
Other types of tremors include cerebellar, dystonic, orthostatic, task-specific, intention, and drug- or metabolic-induced tremors. Cerebellar tremors are caused by lesions or damage to the cerebellum, which controls balance and movement. Dystonic tremors involve involuntary twisting or jerking of the limbs and can be relieved by complete rest. Orthostatic tremors are characterised by rapid muscle contractions in the legs when a person stands up, and the shaking usually stops when the person sits down or walks. Task-specific tremors only appear when performing goal-oriented tasks such as handwriting or speaking. Intention tremors occur when a person makes an intended movement towards a target, such as touching their nose. Drug- or metabolic-induced tremors can be caused by certain medications, asthma medicines, chemotherapy, corticosteroids, and toxic substances such as pesticides and heavy metals.
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Seek a diagnosis
If you are experiencing muscle tremors, it is important to seek a diagnosis from a healthcare professional. They will be able to determine the type of tremor and recommend appropriate treatment options.
There are many types of body tremors, and understanding the type you are experiencing can help a doctor make a diagnosis. Tremors can be classified as rest or action tremors. Rest tremors occur when a person is at rest, and action tremors occur when a muscle moves voluntarily. There are several types of action tremors, including:
- Postural tremors occur when holding a position against gravity, such as holding the arms outstretched.
- Kinetic tremors are associated with any voluntary movement, such as moving the wrists up and down.
- Intention tremors occur when a person makes an intended movement towards a target, such as lifting a finger to touch their nose.
- Task-specific tremors appear when performing goal-oriented tasks such as handwriting or speaking.
- Isometric tremors occur during a voluntary muscle contraction that does not involve movement, such as holding a heavy book in the same position.
In addition to the above, there are other types of tremors that are important to be aware of. Essential tremors are a common type of movement disorder that causes the hands, arms, and other body parts to shake. It is often inherited and can start at any age but most commonly appears in middle age or older adulthood. Parkinsonian tremors are another common type and are often one of the first signs of Parkinson's disease. The shaking is most noticeable when the hands are at rest and may look like someone is trying to roll a pill between their fingers. Orthostatic tremors are a rare type of tremor characterized by rapid muscle contractions in the legs when standing up. Dystonic tremors occur in people with dystonia, a movement disorder that causes involuntary muscle contractions, twisting, and repetitive movements.
To diagnose the type of tremor, a doctor may recommend diagnostic imaging tests such as an MRI or CT scan to detect any brain damage that may be causing the tremors. A positron emission tomography (PET) scan or a SPECT procedure may also be used if Parkinson's disease is suspected. Electromyogram (EMG) tests can also be used to record electrical activity in the muscles and measure involuntary muscle activity.
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Surgical interventions
Deep Brain Stimulation (DBS) is the most common form of surgical treatment for muscle tremors. DBS is a minimally invasive surgical procedure that uses a neurostimulation device, similar to a heart pacemaker, to deliver electrical pulses to a precise location in the brain circuits that influence symptoms. The procedure involves placing a battery-operated neurotransmitter under the collarbone. The device is then connected to a wire implanted under the skin that runs up to the scalp and is guided to the brain through a small hole in the skull. The patient is usually awake during the first stage of the procedure to provide feedback and monitor brain activity. The second stage, in which the neurotransmitter is placed, is similar to receiving a heart pacemaker. DBS poses a small risk of bleeding and infection, as well as potential risks related to the device, such as wire breakage or movement. However, it offers the advantage of minimal damage to the surrounding brain tissue and the ability to reprogram the device wirelessly without additional surgery.
Radiofrequency Ablation is a procedure that uses radio waves to generate an electric current that disrupts the nerves' signaling ability for an extended period. It is typically performed on one side of the brain to improve tremors on the opposite side of the body.
Focused Ultrasound is a non-invasive treatment approved by the FDA in 2016. This procedure uses high-frequency sound waves focused on a single point in the brain involved in producing the tremor, destroying the targeted tissue and reducing tremor severity. It can be used to treat tremors on both sides of the body and has been successfully performed numerous times.
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Non-surgical treatments
Medication
Medications can help reduce the symptoms of muscle tremors, keeping the condition from disrupting your life. If prescribed medication, it is important to take them exactly as prescribed. Some medications for muscle tremors can have unpleasant or serious side effects if you stop taking them suddenly, so it is important not to stop them without first talking to your healthcare provider.
Lifestyle Changes
Certain factors can make tremors worse, so avoiding them may be helpful. Tremors often get worse when you're tired, stressed, anxious, or upset. Caffeine, nicotine, and alcohol can also make the symptoms worse. Avoiding all of the above, whenever possible, can make a big difference in the symptoms experienced.
Nonsurgical Procedures
Botulinum toxin injections, or Botox, involve injecting the toxin into the tremoring muscles to temporarily weaken them and lessen tremor severity. These injections are typically recommended for patients with severe head tremors, and several studies have shown that the injections may significantly help head and voice tremors.
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Lifestyle changes
Reduce Stress and Fatigue: Muscle tremors can be exacerbated by stress, anxiety, fatigue, and strong emotions. Therefore, incorporating stress-relieving practices into your daily routine can be beneficial. This may include activities such as meditation, deep breathing exercises, yoga, or other relaxation techniques. Getting adequate sleep and maintaining a consistent sleep schedule can also help reduce fatigue and improve tremor management.
Dietary Modifications: Caffeine and other dietary stimulants are known to worsen muscle tremors. Reducing or eliminating caffeine intake and opting for non-stimulant beverages can be a helpful dietary change. Additionally, being mindful of certain medications that may trigger or worsen tremors is important. Discussing medication side effects with a healthcare provider can guide adjustments to your diet or medication regimen.
Adaptive Devices: Taking advantage of technological advancements and adaptive devices can greatly improve quality of life for individuals with muscle tremors. These devices are designed to assist with daily tasks that may be challenging due to tremors, such as writing, typing, eating, or dressing.
Regular Medical Follow-ups: Maintaining regular contact with a healthcare provider is crucial for effective tremor management. They can help monitor your condition, adjust medications, and provide treatment alternatives as needed. Being open and honest about your symptoms allows healthcare providers to offer the most suitable interventions.
Physical Relaxation: For certain types of tremors, such as dystonic tremors, physical relaxation techniques can be beneficial. This involves completely relaxing the affected body parts or muscles, which may help alleviate the tremors.
It is important to note that the effectiveness of these lifestyle changes may vary depending on the type and severity of the muscle tremors. Combining these lifestyle changes with medical treatments recommended by a healthcare professional can lead to a more comprehensive management approach.
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Frequently asked questions
It is important to consult a medical professional to get the right diagnosis and treatment for muscle tremors. There are surgical and non-surgical treatments available for muscle tremors. Non-surgical treatments include medication and botulinum toxin (Botox) injections. Surgical treatments include deep brain stimulation (DBS) and thalamotomy.
Muscle tremors are unintentional trembling or shaking movements in one or more parts of the body. They are involuntary, meaning that you cannot control them. They are caused by muscle contractions and can be constant or come and go. Tremors are not life-threatening but can cause challenges and even lead to disabilities.
The cause of muscle tremors is often unknown, but they are sometimes caused by another disorder. They can be inherited and run in families, or caused by neurologic disorders, certain medications, or poisoning from toxic substances. They can also be caused by damage or disruption to nerve cells in the thalamus, the part of the brain that controls movement.
