Intention tremor

Introduction Intentional tremor refers to tremor that occurs during voluntary exercise. It is characterized by the most obvious in targeted movements or when the target is to be achieved, often in the cerebellum and its efferent pathway lesions. Intentional tremor can be accompanied by a decrease in muscle tone and occurs only during limb movement.

Cause

Intentional tremor refers to tremor that occurs during voluntary exercise. It is characterized by the most obvious in targeted movements or when the target is to be achieved, often in the cerebellum and its efferent pathway lesions. Intentional tremor can be accompanied by a decrease in muscle tone and occurs only during limb movement.

Cerebellar tremor is caused by the lesions of the new cerebellar nuclei and their efferent structures, and the decrease in muscle tone is also one of the causes of cerebellar tremor, resulting in instability and shock during exercise.

an examination

Related inspection

Ideological state brain CT examination

Intentional tremor refers to tremor that occurs during voluntary exercise. It is characterized by the most obvious in targeted movements or when the target is to be achieved, often in the cerebellum and its efferent pathway lesions. Intentional tremor can be accompanied by a decrease in muscle tone and occurs only during limb movement.

A type of exercise tremor. More common in the upper limbs and head. It is characterized by a certain kind of purposeful movement or maintaining a certain posture, and disappears when it is still. Such as the shock test.

Differential diagnosis

Differential diagnosis

1. Enhanced physiological tremor: There are tremor movements in the limbs, head, tongue and trunk of normal people. When young, this tremor is fast and subtle, and it is not easy to detect. As the age increases, the amplitude of the jitter increases and the frequency slows down, especially when it is in a certain posture. This physiological tremor has little effect on daily life, but when intense fear, anxiety, anger, insomnia, heavy drinking or taking certain drugs, it may aggravate irregular swaying tremors.

2. Primary tremor: 50% to 70% of patients have a family history. Mainly manifested as slowly progressing postural tremor or intentional tremor, no symptoms of other neurological damage. It usually does not shake when it is at rest, and it only appears when it is in motion, especially when a certain limb is holding a certain posture against gravity. With the increase of age, its incidence rate is increasing, and there is no gender difference in the cause of the disease. Women mainly present with head tremor; males are mainly characterized by hand tremors. Initially manifested as intermittent tremor, only induced when nervous, fear. As the disease progresses, it can manifest as persistent tremor.

3. Parkinson's disease: is a chronic progressive aggravation of central nervous system degenerative diseases that occurs in the elderly (50 to 70 years old). Static tremor, rigidity and bradykinesia are the three major symptoms of Parkinson's disease. The tremor is characterized by 4 to 6 rhythmic tremors per second, which occurs mainly when the limb is at rest, starting from the hand and then involving other limbs. In addition, patients often feel that their limbs are tight and their movements are inflexible. Later, they feel that it is difficult to talk, eat, write, dress, stand up, walk, turn around, etc. It is very difficult to start a certain action, and it is very difficult once you start. Stop it.

There are tremors in the limbs, head, tongue, and trunk of normal people. When young, this tremor is fast and subtle, and it is not easy to detect. As the age increases, the amplitude of the jitter increases and the frequency slows down, especially when it is in a certain posture. This physiological tremor usually has a small impact on daily life. When panic, anxiety, anger, insomnia, heavy drinking, or taking certain medications, it may be exacerbated by irregular, swaying tremors.

A type of exercise tremor. More common in the upper limbs and head. It is characterized by a certain kind of purposeful movement or maintaining a certain posture, and disappears when it is still. Such as the shock test.

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