Hand numbness is a common hand discomfort that affects people’s daily life and sleep. In common experience, hand numbness is equated with cervical spondylosis, and in terms of treatment, it is also titled as a concept that is difficult to treat. But in fact, numbness is not a symptom specific to cervical spondylosis. Numbness is a signal that there is a problem with the nerve, and the diseases that can cause numbness can be divided into three categories: the first category is a problem with the nerve itself, such as neuritis, neurodegeneration, nerve tumors, etc. When this happens, it is often accompanied by many other symptoms, which are relatively difficult to treat, but also relatively rare; the second category is a systemic disease caused by secondary nerve problems, of which The most typical is diabetic peripheral neuropathy, and patients with uremia can also have similar symptoms; the third category is when the nerve is compressed by an external source, which leads to symptoms. This category tends to be the most common problem. In a way, cervical spondylosis can be considered one of them, but more often the nerves are compressed in other areas. This category is given the proprietary name of peripheral nerve entrapment disorders. Two of the most common types of peripheral nerve entrapment disorders are called carpal tunnel syndrome and elbow tunnel syndrome. Carpal tunnel syndrome is a disease caused by compression of the median nerve in the wrist, mostly seen in middle-aged and elderly women, and its cause is related to repeated wrist movements and changes in hormone levels after menopause. How to determine whether the numbness of the hand is related to this swelling disease? First, carefully identify the numb fingers. Generally speaking, patients with carpal tunnel syndrome have numbness in one or more of the thumb, index and middle fingers, while the ring finger is less numb and the little finger is the least numb, or even not numb. People with more sensitive senses may even find that the numbness is different on the two sides of the ring finger, with the middle finger side being more numb and the little finger side being less numb or even not numb. In addition to the location, the time of numbness can sometimes help us to determine, more numbness at night or even wake up because of numbness discomfort often indicates the presence of carpal tunnel syndrome. In more severe cases, in addition to numbness, atrophy of the masseter muscle (the muscle on the side of the palm of the hand that rests on the thumb) is also found, along with weakness of the thumb and little finger against the pinch. For the treatment of carpal tunnel syndrome, patients with different degrees need to receive different treatments. If the numbness is intermittent and there are no other symptoms, it is mild and can often be improved by reducing wrist movement and applying heat. If the numbness is persistent, then the disease has entered the moderate stage, at this stage, the effect of conservative treatment is relatively poor, and surgery may be required. At this stage, it is recommended to visit a hospital to check the electromyography to precisely define the degree of the disease and then choose the appropriate treatment plan. If you go further to the point where there is muscle atrophy and reduced thumb-to-knee strength, then it is most likely to be severe, in which case you can only rely on surgery to relieve the symptoms. This is a symptom caused by the compression of the ulnar nerve in the elbow, and compared with carpal tunnel syndrome, this disease is more common in middle-aged and elderly men, and is associated with repeated elbow joint movements. Clinically, it also manifests mainly as hand numbness, but the extent of numbness is the opposite of carpal tunnel syndrome, with the pinky finger being the most numb, followed by the ring finger, while the other three fingers are basically not numb. Sensitive individuals may also find inconsistent numbness on both sides of the ring finger, but in this disorder it is the side against the little finger that is more numb. In more severe cases, muscle atrophy with hand dysfunction is also found, but this time the atrophied muscles are replaced with the interosseous muscle (the muscle between the thumb and palm on the back of the hand) and the lesser interosseous muscle (the muscle on the side of the palm against the little finger). At the same time, there may be a lack of straightening of the ring finger and little finger and a lack of clenching between the fingers. For treatment, the conservative treatment of this disease is similar to that of carpal tunnel syndrome, which involves reducing the movement of the elbow joint, applying heat and taking neurotrophic drugs. There are other peripheral nerve entrapment disorders that occur from time to time, with symptoms similar to the two common disorders mentioned above, with numbness in a fixed part of the limb as the main manifestation and severe muscle atrophy and limitation of movement. In terms of ancillary tests, electromyography can help physicians determine the location and extent of this disease. In terms of treatment, conservative treatment is based on reducing joint movement, applying heat and taking neurotrophic drugs, and in severe cases