The causes of numbness and tingling in the fingers are manifold: 1, possible peripheral neuritis, considering that it may be caused by neurotrophic disorders. For example, because of the peripheral nerve dystrophy caused by diabetes, or long-term alcoholism leads to a lack of B vitamins in the body, can also lead to patients with nerve demyelination changes, manifested as numbness of the fingers, tingling. 2, consider the cerebrovascular disease caused by unilateral numbness of the limbs, such as cranial competent sensory nerve damage to the position of the brain will be the problem, and may be accompanied by tiredness, limbs, and other symptoms of inflexible activity. 3, finger numbness, tingling may also be caused by local tenosynovitis, and usually fatigue, fatigue, in the inflammation or cold water stimulation will lead to aggravation of the symptoms.