Tremors
Tremors
Tremors (/ˈtrɛmər/, from Latin: tremor, "a shaking") are involuntary, rhythmic muscle contractions that cause shaking movements in one or more parts of the body. They are often associated with diseases or conditions that affect the parts of the brain that control muscles throughout the body.
Types of Tremors
There are several types of tremors, including:
- Essential tremor: This is the most common type of tremor, often affecting the hands and head, but it can also cause trembling in the voice, arms, legs, and trunk. The cause is unknown.
- Parkinsonian tremor: This is a common symptom of Parkinson's disease, characterized by a resting tremor, often in the hands.
- Dystonic tremor: This occurs in individuals of all ages who are affected by dystonia, a movement disorder.
- Cerebellar tremor: This is a slow, broad tremor of the extremities that occurs at the end of a purposeful movement, such as trying to press a button or reaching for a cup.
- Psychogenic tremor: This can occur at rest or during postural or kinetic movement. The characteristics of this kind of tremor may vary but generally include sudden onset and remission, increased incidence with stress, change in direction of tremor, and greatly decreased tremor activity when distracted.
Causes
Tremors can be caused by a variety of conditions and factors, including:
- Neurological disorders: Various diseases of the nervous system can lead to tremors, including Parkinson's disease, Multiple sclerosis, Stroke, and Traumatic brain injury.
- Medications: Certain drugs can also cause tremors, such as amphetamines, corticosteroids, and drugs used for certain psychiatric and neurological disorders.
- Alcohol abuse or withdrawal: Tremors are a common symptom of alcohol withdrawal, but they can also occur in those who abuse alcohol.
- Anxiety or stress: In some cases, severe stress or anxiety can cause tremors.
Treatment
Treatment for tremors depends on their cause. In some cases, treating the underlying condition can reduce or eliminate the tremors. In other cases, medications or surgical treatments may be needed.
External links
- Medical encyclopedia article on Tremors
- Wikipedia's article - Tremors
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