Finger numbness is an abnormal sensation caused by an alteration in sensory nerve function.
Numb fingers, numbness in fingers, numbness of fingers, tingling fingers.
Sensations are carried from the extremities of the body to the brain via neurons in the spinal cord. If the blood supply to the nerves is or if the nerve is otherwise damaged or its function affected, it can produce the feeling that "my finger fell asleep". If the blood loss is permanent or severe, it is called ischemia and can result in permanent nerve damage. Nerves in the fingers can be damaged when the blood supply is decreased over time, as in diabetes.
If finger numbness is persistent and accompanied by other symptoms such as weakness and pain, it requires thorough evaluation by a physician. A complete history and physical, including family history, work history, laboratory tests may be indicated. Nerve conduction velocity tests, electromyography, imaging studies and nerve biopsy may be required. Treatment will depend on the underlying cause and relieving symptoms. Physical and occupational therapy as well as stretching exercises may help alleviate symptoms once the underlying cause is found and treated.