Finger numbness is an abnormal sensation that’s caused by a change in
sensory nerve function.
Numb fingers, numbness in fingers, numbness of fingers, tingling
Sensations are carried to the brain through neurons in the spinal cord.
If the blood supply to the nerves is limited or the nerve is otherwise damaged
it can produce the feeling that your finger “fell asleep”. Permanent or severe
blood loss (ischemia) can result in permanent nerve damage. Nerves in the
fingers can be damaged when the blood supply is decreased over time, like in
- peripheral nerve compression
- diabetic nerve damage
- multiple sclerosis
- snake bites
- peripheral neuropathy
- pernicious anemia
- toxin exposure or poisoning
- necrotizing vasculitis
- Guillain-Barre syndrome
Diagnosis and Treatments
See your doctor if finger numbness doesn’t go away and is accompanied by
other symptoms like weakness and pain. A complete medical history and
physical may be required for a diagnosis. Possible required tests include:
- nerve conduction velocity tests
- imaging studies
- nerve biopsy
Treatment will depend on the underlying cause and aim to relieve symptoms.
Physical and occupational therapy and stretching exercises may help ease
symptoms once the underlying cause is found and treated.