The Cause Of Numbness In Fingers

There are many causes, yet few definitive reasons, for numbness in the fingers. Fingers, like feet and arms, often fall asleep from lack of circulation and create an abnormal sensation described as tingling. The lack of blood supply to the numb finger can be created from a movement as simple as putting pressure on the area to a more serious medical condition such as diabetes.

Time

Remaining in the same position for long periods of time reduces the flow of blood and can cause numbness.

Injury

Injury to related nerve pathways in the neck or arm can block blood flow to the fingers. A herniated disk in the spine also may create subsequent problems in the fingers.

Nutrition

A lack of vitamin B12 can cause various problems, including blood flow, reports the National Institutes of Health. Deficiencies or abnormal levels of salt, calcium and potassium can cause finger numbness.

Plaque

Arteriolosclerosis, or plaque buildup in the arteries slows the flow of blood. Numbness associated with plaque typically is felt while moving.