Individuals who experience numbness in their fingers should see a doctor if the numbness does not cease or if other symptoms, such as weakness or pain, accompany the numbness, according to Healthline. Finger numbness can occur as the result of limited blood supply or nerve damage.
While rare, numbness in the hands can be caused by issues in the brain, spinal cord issues, a stroke or tumors, as Mayo Clinic explains. More commonly, irritation, damage or nerve compression causes numbness in the hands. Some diseases, such as diabetes, can cause numbness, but numbness typically occurs in the feet first. Additional possible causes of numbness in the hands includes carpal tunnel syndrome, chronic alcohol use, some types of chemotherapy and vitamin B-12 deficiency.
Tingling in the fingers, which is often described as a prickling or as a pins-and-needles sensation, is a form of parasthesia, according to Healthgrades. This sensation can occur when the arm has been in the same position for an extended period. However, this condition can be chronic as well, particularly among people who have peripheral neuropathy, diabetes or multiple sclerosis. When a person experiences tingling or numbness of the pinky and ring finger, it is often a sign of ulnar nerve compression in the arm. Tingling and numbness in the thumb, index, middle and half of the ring finger is often caused by carpal tunnel syndrome.