Numbness of the hand may be related to living habits, environmental factors, drug factors and disease factors.
1. Lifestyle habits: keeping the same movement or pressure on the arm for a long time can lead to nerve compression or poor local blood flow, triggering short-term numbness or tingling in the hand.
2. Environmental factors: the environment temperature is too low, do not do a good job of warm measures may appear hand numbness.
3. Drug factors: some chemotherapy drugs such as vincristine, colchicine, paclitaxel, doxorubicin, some antibiotics such as aminoglycoside antibiotics, some anti-tuberculosis drugs such as isoniazid and other neurotoxicity, which may cause numbness of the hand.
4. Disease factors:
(1) Brain and nervous system lesions involving the hand-related nerves: cervical spondylosis, Guillain-Barre syndrome, neurological paraneoplastic syndrome, peripheral neuropathy, cerebral infarction and so on.
(2) Hand-related nerve injury due to trauma or overuse: brachial plexus injury, carpal tunnel syndrome, elbow tunnel syndrome, frostbite, etc.
(3) Other systemic diseases or causes involving the arm nerves: long-term alcoholism, excessive alcohol consumption, chronic alcoholism leading to hand numbness; ganglion cysts; malignant tumors; vitamin B12 deficiency; hand numbness caused by certain poisoning.
There are many causes of hand numbness, it is recommended that timely medical treatment, under the guidance of the doctor to identify the cause of the disease, targeted treatment.