There are many reasons that can cause hand numbness. Since the normal movement functions and sensations of the hands are mainly maintained and controlled by blood vessels and nerves, hand numbness is generally related to the lesions of blood vessels or nerves. To analyze the possible causes, we can usually look at the time when the numbness occurred, whether one hand or both hands were numb, the location of the numbness, accompanying symptoms, and the nature of the work performed.
The following 5 common diseases are found:
1. Carpal tunnel syndrome
It is common in people who have been engaged in occupations that often require wrist flexion and extension for a long time, such as Housewives, computer typists, porters, etc., will suffer from chronic strain due to long-term wrist flexion and extension. The pressure in the carpal tunnel of the hand increases and compresses the median nerve. At this time, the thumb, index finger, middle finger and ring finger in the area controlled by the median nerve will become injured. Abnormal sensation or numbness may occur, or even pain and discomfort may occur.
2. Cervical spondylosis
Cervical spondylosis is common among workers who work at their desks for a long time, such as writers, programmers, civil servants and assembly line workers, or those who use mobile phones excessively. Keeping the neck in the same position for a long time is prone to chronic strain, which can lead to thickening of ligaments and swelling and prolapse of intervertebral discs. When nerve roots or vertebral arteries are compressed, symptoms such as numbness in the limbs and dizziness can occur, among which numbness in the hands is common. one of the symptoms.
3. Diabetes
Most people with diabetes will not feel any discomfort in the early stage, but when the disease progresses to a certain extent, abnormal sensation will occur. This is due to the concurrent diabetic peripheral neuropathy. , the main clinical manifestations include numbness, pins and needles, ant crawling and electric shock-like sensations starting from the distal hands and feet. They generally appear symmetrically, but there are also asymmetries.
4. Cerebral infarction
It is caused by blockage of blood vessels in the brain, and usually has an acute onset. However, depending on the scope and duration of the infarction, the clinical symptoms vary in severity. If the initial infarction is small, weakness or numbness may only occur on one side of the limb, and usually the hands and feet on one side will appear at the same time. If the treatment is timely, it will have less impact on related functions in the later period, otherwise it will leave sequelae and affect the quality of life.
5. Vitamin B12 deficiency
Vitamin B12 is a coenzyme that catalyzes many biochemical reactions in the body. In the body, it can participate in the production of bone marrow red blood cells, promote protein synthesis, and protect nerves from damage. Therefore, Vitamin B12 deficiency can cause megaloblastic anemia and peripheral neuropathy. Peripheral neuropathy can also cause numbness in the hands.
It is definitely not normal to have hand numbness for no reason, and it is not easy to figure out the cause, so it is best to go to the hospital and undergo relevant examinations. In particular, hand numbness caused by stroke is usually accompanied by slurred speech, weakness of one limb, facial paralysis, etc. Once discovered, call 120 immediately and go to a nearby qualified hospital for diagnosis and treatment as soon as possible, so that brain cells can be restored as soon as possible. function to avoid sequelae as much as possible.