A cycling hand numbness generally consider three possibilities: weather factors, psychological factors, disease factors.
1. Weather factors: cycling in cold climates, cold temperatures will stimulate vasoconstriction of the upper extremities, causing a reduction in blood supply to the upper extremities, there will be a numbness of the hands.
2. Psychological factors: in nervousness, bilateral hand too hard, resulting in local blood circulation disorders, will also appear hand numbness.
3. Disease factors: such as nerve root cervical spondylosis, carpal tunnel syndrome, cycling cervical nerve root, median nerve may be pulled because of the movement and stimulation, thus causing hand numbness.
A cycling hand numbness and a long time can not be relieved, it is recommended that the hospital as soon as possible to improve the relevant examination, to take the appropriate intervention measures.