There are two main types of hand tremor: 1. Essential tremor. The cause of this disease is unknown and mainly affects the upper limbs and head. The main manifestation is hand shaking when doing fine movements, such as writing, holding chopsticks, buttoning buttons, etc. Hand trembling is more obvious when you are emotionally stressed or tired, and lessens or disappears completely when you are relaxed or resting. Symptoms may be relieved by drinking alcohol. There are no other abnormalities in the neurological examination except hand shaking. Currently, the most effective treatment for this disease is drug treatment. Taking medication can improve the symptoms, but they relapse after stopping the medication. This is the so-called "treating the symptoms but not the root cause". Essential tremor progresses very slowly or does not progress and has little impact on daily life. 2. Parkinson's disease. This is a degenerative disease that occurs in the elderly. In addition to hand tremors, it is also accompanied by symptoms such as slow movement, stiff limbs, and poor balance function. If left untreated, symptoms will get worse. This disease requires the help of specialists for diagnosis and treatment

Hand tremors are divided into physiological hand tremors and pathological hand tremors

Physiological hand tremors are small in amplitude and fast in speed, mostly when they are still. It appears as a small, rapid, and irregular jitter. Physiological hand tremors are often caused by mental stress, fear,... It occurs under conditions of emotional excitement, severe pain and extreme fatigue. Once the above-mentioned causes of hand trembling are eliminated, the hand trembling will also disappear.

Pathological hand tremor, medically known as "tremor", refers to the involuntary tremor of the hand, which is often permanent. It is mainly divided into two types: static hand tremor and exercise hand tremor. Resting hand tremor is hand tremor that occurs when the muscles are completely relaxed, that is, in a quiet state. This kind of hand shaking disappears when sleeping. The hand shaking speed is 4-6 times/second, which is relatively regular and typical of diseases such as Parkinson's syndrome. Sports-induced hand tremor occurs only during exercise, and the tremor worsens when the movement is close to the target. For example, when a doctor performs a finger-nose test on a patient, he asks the patient to straighten his forearm and then use his index finger to point to the tip of his nose. The closer the index finger tip is to the tip of his nose, the more obvious the shaking of his hand will be. Exercise-induced hand tremor is irregular, with a large amplitude, and is enhanced by emotions. It is common in lesions of the cranial nerves and upper limb nerves.

Common diseases that cause pathological hand tremor in clinical practice include: upper limb neurological diseases and injuries, brain tissue diseases and drug-induced hand tremor.

Hand tremors are a common phenomenon among the elderly. Both hands are shaking constantly, eating and writing are seriously affected, which makes the elderly very distressed. Medically, this shaking is called tremor. Although tremor manifests as shaking of the hands, the root cause is mostly in the body. Due to some disease, the area of ??the body responsible for movement coordination is damaged, causing tremor.

Clinically, shaking paralysis, cerebral arteriosclerosis, midbrain or cerebellar flat lesions, hepatic encephalopathy, drug poisoning, dementia, etc. may all cause hand tremors in the elderly. According to medical research, consuming broad beans and coffee can effectively control tremors. Family members can give the elderly more of these two foods appropriately.

If pathological factors are excluded, another common cause of hand tremors is psychological factors.