functional tremor
Introduction
Introduction Tremor is a certain direction, involuntary, rhythmic or arrhythmic vibration of a part or all of the body. More common in the hands, feet, tongue, eyelids and other corners. Head and lower limbs are rare. Functional tremor: The amplitude of tremor is more physiological than normal, and can be detected by the naked eye. The cause can be seen in hypoglycemia, pheochromocytoma, hyperthyroidism, alcoholism, and drug poisoning. Also seen in normal people's emotional excitement, excessive fatigue, panic, anger, squatting, strenuous exercise, etc. Caries tremor also belongs to this category, its tremor is often irregular, the site is not fixed, often accompanied by psychological disorders and other signs of rickets.
Cause
Cause
Functional tremor often has symptoms such as emotional excitement, fatigue, and physical weakness. Organic tremor is caused by diseases such as arteriosclerosis, midbrain and cerebellum, and may be caused by hypothyroidism or taking certain drugs. Causes tremors.
Examine
an examination
Related inspection
EEG examination of intracranial ultrasound, intracranial Doppler flow imaging (TCD), brain evoked potential, brain CT examination
Check item:
Amniotic fluid alpha-fetoprotein assay (AFP): high alpha-fetoprotein (AFP) in amniotic fluid in fetuses with open neural tube defects.
Brain CT examination: CT examination of the brain is a method of examining the brain by CT.
Spinal MRI: The diagnostic accuracy rate of spinal and spinal cord diseases is significantly higher than that of CT. The pathogen display and positioning are accurate and can be used as the preferred method of examination.
Magnetic Resonance Imaging (MRI): Magnetic resonance imaging (MRI) is a new type of high-tech imaging examination method in recent years. It is a new medical imaging diagnostic technology that was applied to the clinic in the early 1980s. It has no ionizing radiation (radiation) damage; no bone artifacts; multi-directional (transverse, coronal, sagittal section, etc.) and multi-parameter imaging; high soft tissue resolution; vascular structure can be displayed without the use of contrast agents And so on.
Brain evoked potentials: Brain function was examined by brain evoked potentials.
Electroencephalogram examination: EEG examination is a graph obtained by amplifying and recording the spontaneous biopotentials of the brain from the scalp through an instrument.
Brain ultrasound examination:
1, B-type ultrasound craniocerebral examination: mainly used for children under the age of 2 years of unintentional closure, through the Tuen Mun as a "sound window" for scanning.
2, transcranial color Doppler imaging: through the sputum window, pillow window, sputum window exploration, can explore the cerebral artery, according to the intracranial blood vessel flow rate, bandwidth, abnormal flow or audio abnormalities, etc., applied to the cerebral blood vessels Diagnosis of the disease and classification of the cause.
Diagnosis
Differential diagnosis
Differential diagnosis of functional tremor:
1. Resting tremor
Refers to tremors that occur when the muscles are completely relaxed, that is, in a quiet state. More rhythmic, 4-6 rhythmic shakes per second, combined with action tremors, increased mental stress, disappeared during sleep. Common in the head, lower jaw, upper limbs and lower limbs. When it appears in the upper limbs, you can see a note or a pill-like action on your hand. More common in Parkinson's syndrome. Static tremor is seen in the middle of the brain and is covered by the junction of the proximal arm. Parkinson's tremor is clinically characterized by resting tremor, muscle rigidity, and decreased movement. Any other disease involving the extrapyramidal system that can cause the same clinical manifestations is collectively referred to as tremor paralysis syndrome or Parkinson's syndrome.
Hepatic sclerotia should be thought of in patients with tremors, myotonia, involuntary movements, mental disorders, or unexplained cirrhosis. If a corneal KF ring and family history are found, the diagnosis can be confirmed. Laboratory examination of the majority of patients with serum ceruloplasmin and serum copper oxidase decreased, increased urinary copper. Early diagnosis of the disease makes sense.
2, exercise tremor
It refers to the tremor that does not occur at rest, only when exercising. Exercise tremor is an important part of cerebellar symptoms. Compared with resting tremor, it is arrhythmetic, large in amplitude, and enhanced with emotional stress. 1 Sports tremor: Appears during random movement and disappears at rest. The main reason is the orange anti-muscle coordination dysfunction, which is found in the midbrain combined with arm lesions. 2 positional tremor (intentional tremor): Appears when the body is in a certain posture, and disappears at rest. More common in the upper limbs or head, the upper limbs are obvious, the distal end is heavier than the proximal end, and it is easy to induce when the upper arm rotates inside and outside. It is found in the lesions of the cerebellar dentate nucleus or the dentate nucleus. 3 Uncertain tremor: Sometimes it is static, sometimes it is action or combined, and it can also be seen in Parkinson's syndrome.
