Victor Forge
Muscle trembling, or tremors, are involuntary and uncontrollable rhythmic movements of one or more body parts. They can occur in any part of the body and at any time. Tremors are distinct from muscle spasms and twitches and are usually caused by a problem in the cerebellum, the part of the brain that controls muscular movement. While the exact cause of some types of tremors is unknown, they can be caused by lifestyle factors such as caffeine, certain medications, stress, and tiredness, as well as medical conditions such as Parkinson's disease, multiple sclerosis, stroke, and traumatic brain injuries.
| Characteristics | Values |
|---|---|
| Type | Rest tremor, action tremor, isometric tremor, kinetic tremor, orthostatic tremor, dystonic tremor, cerebellar tremor, essential tremor, Parkinsonian tremor |
| Body parts affected | Hands, arms, legs, head, vocal cords, torso, neck, chin, lips, face |
| Cause | Stress, strong emotion, physical tiredness, certain postures, specific movements, neurological disease, certain drugs, alcohol withdrawal, medical conditions (e.g. overactive thyroid, hypoglycemia, Parkinson's disease, multiple sclerosis, hypercalcemia), low blood sugar, lack of exercise, low potassium, magnesium, calcium, vitamin D, caffeine, certain medications, traumatic brain injuries, brain damage, brain tumours, metabolic conditions, neurodegenerative conditions, poison from toxic substances |
| Treatment | Botox injections, surgery, deep brain stimulation (DBS), high-intensity focused ultrasound (HIFU) |
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What You'll Learn
Stress, strong emotions, and physical fatigue
Tremors are unintentional, uncontrollable rhythmic movements of one or more body parts. They are distinct from muscle spasms or twitches. Tremors can occur in any part of the body and at any time. They are usually the result of a problem in the cerebellum, the part of the brain that controls muscular movement. Tremors are not life-threatening but may cause challenges and even lead to disabilities. They can make daily life tasks such as writing, typing, eating, shaving, and dressing more difficult.
Chronic or severe stress can be harmful to your health and cause muscle tremors. Strong emotions can also trigger tremors, and people with Parkinson's disease may experience worsened tremors due to stress or strong feelings. Tremors can be a sign of physical fatigue, with tiredness or physical exhaustion leading to twitches and spasms. Relaxation techniques such as massage or meditation can help alleviate muscle tension and pain caused by stress.
While tremors are usually not caused by a neurological disease, they can be a symptom of Parkinson's disease, as mentioned earlier. They can also be caused by other factors, such as certain drugs, alcohol withdrawal, or medical conditions like an overactive thyroid or low blood sugar. Tremors caused by these factors are potentially reversible once the underlying cause is addressed.
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Neurological conditions
Tremors are unintentional, uncontrollable rhythmic movements of one limb or part of the body. They are distinct from muscle spasms or twitches and can range from mild to severe. Tremors are usually the result of a problem in the cerebellum, the part of the brain that controls muscular movement. While tremors are not life-threatening, they can cause challenges and even lead to disabilities. They can make daily life tasks such as writing, typing, eating, shaving, and dressing more difficult.
- Parkinson's disease: This is a slowly progressive neurological disease characterized by a fixed inexpressive face, a tremor at rest, slowing of voluntary movements, peculiar posture, and muscle weakness. It is caused by the degeneration of an area of the brain called the basal ganglia and low production of the neurotransmitter dopamine. Parkinsonian tremors typically begin in one limb or on one side of the body and then progress to the other side.
- Multiple sclerosis: This is a neurodegenerative condition that can cause tremors. It is associated with damage to the cerebellum and its pathways to other brain areas.
- Stroke: Damage to the cerebellum and its pathways can cause tremors. A stroke is one of the possible causes of such damage.
- Traumatic brain injury: This is another cause of damage to the cerebellum and its pathways, which can result in tremors.
- Dystonia: This is a movement disorder in which incorrect messages from the brain cause muscles to be overactive, resulting in abnormal postures or sustained, unwanted movements. Dystonic tremors are irregular and jerky and can be relieved by relaxing completely or touching the affected body part or muscle.
- Essential tremor: This is one of the most common movement disorders. It is characterized by a tremor in both hands and arms during action without other neurological signs. It may also affect the head, voice, or lower limbs. While the exact cause of essential tremor is unknown, studies have shown that it is accompanied by mild degeneration of the cerebellum.
In addition to the above, certain medications, metabolic conditions, and lifestyle factors can also contribute to muscle tremors.
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Alcohol withdrawal
Tremors are a type of rhythmic body movement that is out of one's control. They can range from mild to severe and may be constant or occasional. Tremors are usually caused by neurological conditions, but they can also be caused by reactions to certain drugs, alcohol withdrawal, or medical conditions.
Heavy alcohol consumption causes changes in brain chemistry, slowing brain activity and reducing energy levels. To counteract the sedative effect of alcohol, the brain increases nerve activity to keep the body alert. When alcohol intake stops, the brain continues to deliver increased nerve activity, resulting in tremors, anxiety, and hyperactivity. Alcohol also depletes vitamin B, which is necessary for healthy nerve function, and can lead to a vitamin B1 (thiamin) deficiency, exacerbating the tremors and potentially causing more severe neurological issues such as Wernicke-Korsakoff Syndrome (WKS).
Withdrawal from alcohol can also cause insomnia and anxiety, which can worsen tremors. It is recommended to seek medical supervision for a gradual detox, especially for heavy drinkers, as abrupt withdrawal can trigger severe tremors, seizures, and delirium tremens (DTs). Delirium tremens is an extremely severe form of alcohol withdrawal that can be fatal and usually occurs after reducing or stopping alcohol intake after heavy drinking. It is characterized by insomnia, tremors, seizures, clouded consciousness, hallucinations, and confusion.
There are treatments available to manage alcohol withdrawal tremors, including prescribed medications such as benzodiazepines, baclofen, and clonidine. Baclofen, a skeletal muscle relaxant, is an alternative to benzodiazepines as it is non-addictive and can be effective in reducing tremors. Additionally, engaging in regular physical activity, especially exercises focusing on fine motor skills and coordination, can help strengthen muscles and improve control over tremors. Deep breathing, meditation, and light stretching can also promote relaxation and reduce anxiety, which can exacerbate tremors.
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Metabolic conditions
Muscle trembling, or tremors, are rhythmic and involuntary movements of a body part that are typically out of one's control. While tremors are not life-threatening, they can cause challenges and even lead to disabilities in daily life tasks such as writing, eating, or dressing. Tremors can occur on their own or as a result of another disorder.
Hyperthyroidism
Hyperthyroidism, or excessive production of thyroid hormone, can lead to tremors. This condition is often accompanied by symptoms such as weight loss, palpitations, excessive sweating, nervousness, and a tendency to be overheated. Checking thyroid hormone levels can help distinguish this condition from a pure tremor disorder.
Hypoglycemia
Low blood sugar or glucose levels can cause tremors. This is typically accompanied by other symptoms, including sweating, dizziness, hunger, and irritability.
Hypocalcemia
Hypocalcemia, or low calcium levels in the blood, is associated with conditions such as hyperparathyroidism, lung cancer, breast cancer, kidney failure, and elevated vitamin D levels. While this condition does not directly cause tremors, it can result in muscle weakness and shaking.
Hypomagnesemia
Low magnesium levels can also contribute to tremors.
It is important to note that tremors resulting from metabolic conditions are typically treatable and can be resolved by addressing the underlying condition. For example, treatment for hyperthyroidism typically makes the tremor go away.
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Medication
There are numerous medications that have been associated with tremors. These include:
- Amiodarone (Pacerone)
- Beta-agonists
- Fluticasone/Salmeterol (Advair Diskus, Advair HFA)
- Mometasone/Formoterol (Dulera)
- Lithium
- Valproate
- Beta-blockers like Propranolol
- Anticonvulsants or anti-seizure medications like Sodium Valproate (Depakene), Divalproex Sodium (Depakote), and Valproic Acid
- Cancer medicines such as Thalidomide and Cytarabine
- Asthma medicines such as Theophylline and Albuterol
- Immunosuppressants such as Cyclosporine, Tacrolimus, Everolimus (Afinitor), and Sirolimus (Rapamune)
- Antidepressants
- Antipsychotics
It is important to note that caffeine, a stimulant found in coffee, tea, and soda, can also cause or worsen tremors. Therefore, it is recommended to avoid caffeinated drinks if experiencing medication-induced tremors.
If you are experiencing tremors, it is advisable to consult your healthcare provider, who will perform a diagnosis based on your medical history, physical examination, and blood tests. They may also recommend reducing the dosage or switching to alternative medications.
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Frequently asked questions
Muscle trembling, or tremors, are unintentional and uncontrollable rhythmic movements of one or more body parts.
Muscle trembling can be caused by various factors, including lifestyle choices such as consuming too much caffeine, stress, and alcohol withdrawal. It can also be caused by certain medications, metabolic conditions, neurodegenerative diseases, brain injuries, and other medical conditions.
Yes, there are several types of muscle tremors, including isometric tremors, kinetic tremors, orthostatic tremors, dystonic tremors, and essential tremors.
Symptoms of muscle tremors can vary depending on the type of tremor and the individual. However, common symptoms include shakiness, rhythmic movements, and uncontrollable muscle contractions that can affect various body parts, including the hands, arms, legs, head, vocal cords, and torso.
Treatment for muscle trembling depends on the underlying cause. In some cases, treating the underlying condition or discontinuing certain medications can help alleviate tremors. Botox injections, medications, and surgery may also be used to manage symptoms.
