The causes of numbness of the fingertips are as follows: First, cervical spondylosis: cervical spondylosis is due to herniated intervertebral discs or cervical spondylotic hyperplasia, which oppresses the nerves innervating the upper limbs, leading to numbness of the fingertips. Second, neuropathy: especially diabetic peripheral nerve disease, it can also cause numbness of the fingertips. Peripheral neuritis can also cause numbness of the fingertips, peripheral neuritis is mainly due to vitamin B1, vitamin B12 and other B vitamins deficiency, through the oral B vitamins can be relieved. Third, cerebrovascular disease: it is recommended to do a cranial magnetic resonance or CT examination, multiple cerebral infarcts can easily lead to numbness of the fingertips. Fourth, mental factors: such as excessive emotional tension, anxiety, and crying for too long, may also lead to numbness of the fingertips.