Essential tremor This is the most common type of tremor. It starts on one side of the body. Sometimes, it is progressive. This means that the other side of the body becomes affected too. It mostly affects the hands



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Tremor

A tremor is an involuntary, rhythmic muscle movement. These movements are often back-and-forth actions of one or more body parts.


Most tremors affect the hands. However, tremors can occur in the arms, head, face, vocal cords, trunk, and legs.
Children with tremor often have back-and-forth, or oscillating body movements. They may also have a shaky voice. Tremors can affect fine motor coordination, such as writing and gripping objects. Tremors become more severe and may be triggered when your child is feeling stress, fatigue, or strong emotion.
A tremor may be a symptom of other neurological conditions. This is because certain areas of the brain control movement. Conditions that affect brain function include stroke, traumatic brain injury, and neurodegenerative diseases. Tremor can also be inherited. Alcohol abuse, poisoning, and certain medicines can also cause tremor because of their effect on the brain.
Different types of tremors

Tremors have different names depending on when they occur, such as:


Resting tremor, which occurs at rest

Postural tremor, which occurs when a person assumes a specific posture

Intention tremor or action tremor, which gets worse during an intentional movement

Tremors are also described based on how they are caused. This includes how severe the movements are and what parts of the body are affected. Some common types are listed here.


Essential tremor

This is the most common type of tremor. It starts on one side of the body. Sometimes, it is progressive. This means that the other side of the body becomes affected too. It mostly affects the hands. The head, voice, tongue, legs, and trunk can also be involved.
Physiological tremor

This is a mild form of tremor without a neurological (brain) cause. It can happen in normal, healthy children. Physiological tremor can affect all voluntary muscle groups. It is made worse by fatigue, low blood glucose levels, metal poisoning, stimulants, alcohol withdrawal, and heightened emotion.


Dystonic tremor

Dystonic tremor most often occurs in children with dystonia. Dystonia is a movement disorder that causes sustained muscle contractions, leading to painful twisting or abnormal postures. The dystonic tremor is triggered when the child is in a certain posture or moves a certain way. Rest and touching the affected muscle may help to relieve the tremor.


Cerebellar tremor

This is a slow tremor that occurs during movements that have a purpose, like pressing a button. It is caused by brain damage from multiple sclerosis, stroke, tumour, or lesions in the cerebellum. It is triggered on the same side of the body as the brain damage.


Parkinson’s tremor

This type of tremor is also called "pill-rolling." The tips of the thumb and index finger come together and then apart in a circular movement. Parkinson’s tremor can also affect the chin, legs, and trunk. It is an early sign of Parkinson’s disease, which most often occurs after the age of 60. It is rarely seen in children, but Parkinson's tremor can also occur as a result of brain damage.


Treating tremor

Tremors cannot be fully cured. Often, a tremor can be made less severe through treatment with drugs. The type of drug used depends on the type of tremor. Other measures that may help to reduce tremor include staying away from things that trigger a tremor, such as caffeine.


Key points

Tremors are involuntary movements that affect the hands or other parts of the body.

Tremors have different causes. These include brain problems, poisoning, and injury. It can also be inherited.

There are several types of tremors.



Tremors are treated mostly with therapy and drugs. They are only rarely treated with surgery.

The type of treatment depends on the type of tremor and how severe it is.


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