What Is a Postural Tremor?

Postural trema is a tremor that occurs when the affected part of the body actively maintains a certain posture. It is clinically most common in idiopathic tremor.

Postural tremor

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Postural trema is a tremor that occurs when the affected part of the body actively maintains a certain posture. It is most commonly clinically used in

Postural tremor ^[1]

Common clinical diseases are ^[2] :

1. Idiopathic trema: Early onset and often a family history of tremor. Postural tremor is the only symptom of the disease. Often seen in the hand, it affects fine movements, writing, and eating with spoons and chopsticks. Followed by the head, showing a small nod or shake. When the patient lifted his upper limb flat, he could see 5 to 8 tremors / second of tremor on both the fingers and wrists, with indefinite amplitude, which aggravated during mental stress. The disease has neither muscle rigidity and reduced movement, nor symptoms of hypotonia, ataxia, nystagmus, and drunkard gait, which are easily distinguished from tremor paralysis and cerebellar disorders.

2. Flutter tremor: The main feature is postural tremor. It disappears during rest and sleep, and increases when mentally excited. When the patient's upper limbs are stretched forward and the wrist is straightened to maintain a certain posture, the wrist joint is suddenly flexed, and the rear wrist joint can be quickly extended to the original position. This repeated wrist flexion and straightening is like flapping wings. This tremor is characterized by irregularities, arrhythmias, and frequent changes in amplitude. It is mainly found in systemic metabolic diseases, such as liver coma, uremia, chronic pulmonary insufficiency, hypokalemia, erythrocytosis during heart failure, lipolysis, Whipple disease, and hypomagnesemia. The central nervous system is caused by repeated inhibition and excitement of muscle tone.

3. Poisoning and infective tremor: Postural tremor can occur in various drugs and poisoning such as alcohol, lithium, lead, phosphorus, magnesium, mercury, carbon monoxide, and various infections (such as typhoid fever, chicken pox, smallpox). This kind of tremor such as alcoholism is not obvious at rest. When the upper limbs stretch their fingers forward and keep this position, the tremor is obvious, which is characterized by vibration tremor. If it occurs on the fingers, it can affect the tongue, facial muscles and nasal wings. You can see small tremors when you laugh and talk. The tremor caused by mercury poisoning is a moderate rhythm tremor, which occurs at rest and is more prominent during exercise, and the tremor that gets closer to the destination is stronger. That is to say, static tremor and postural tremor are mixed, and strengthened when fatigue and mental excitement occur.