There are many causes of numbness in the right index finger, the most common causes are mainly the following: 1, physiological factors, such as sleeping in the wrong position can cause nerve compression in the upper limbs, resulting in numbness in the fingers. This is often transient and does not require much treatment, and can be effectively relieved by local massage and stretching activities. 2, cervical spondylosis, which can compress the brachial plexus nerve causing symptoms of arm numbness, and in severe cases, dizziness, unstable walking and nausea, etc., can be clearly diagnosed by improving the neck examination. Treatment is mainly through Chinese physical therapy, such as acupuncture, tui na, traction and other ways to improve the symptoms. 3, cerebrovascular disease, stroke can not only cause symptoms of numbness in the limbs, but also can appear impaired limb movement, swallowing difficulties, impaired speech function, and even coma, etc., through the perfect head examination can be clearly diagnosed.