Numbness of the fingertips may be related to fingertip strain, or it may be caused by cervical spondylosis, diabetic peripheral neuropathy, peripheral neuritis and other reasons. 1. Excessive fatigue of fingertips: If you do manual work for a long time, it may cause numbness of fingertips due to long and frequent labor of fingertips. 2. Cervical spondylosis: the disease often causes the normal physiological curvature of the cervical spine to change, and if the patient still maintains an inappropriate posture, such as sedentary, incorrect sitting posture, etc., it is easy to cause stiffness of the cervical muscles, which is likely to cause compression of the local nerve roots, and may cause numbness of the fingertips, and may be accompanied by neck pain and discomfort, as well as head pain and other symptoms. 3. Diabetic peripheral neuropathy: this disease can lead to patients with peripheral nerve damage, and peripheral nerves to the fingers of the sensory function and motor function of the innervation, when the peripheral nerve damage, it may cause fingertip numbness. 4. Peripheral neuritis: this disease is usually due to the influence of drug factors, metabolic diseases and other factors, resulting in aseptic inflammation of the end of the nerve, which can cause damage to the peripheral nerves, resulting in sensory deficits in the distal end of the limb, thus causing numbness of the fingertips. 5. Carpal Tunnel Syndrome: patients first feel numbness or pain in the three radial finger tips, weakness in holding objects, especially in the middle finger, the worst symptoms at night or in the early morning, and can be alleviated by shaking the wrist appropriately. Numbness of the fingertips may also be related to other factors, such as brachial plexus nerve injury and stroke. If the symptoms do not improve, you should consult a doctor as soon as possible to diagnose the cause and then give targeted treatment.