What causes numbness in hands?
There are many reasons why a person might experience numb or tingling fingers and hands. This numb sensation is usually caused by the compression or damage of a nerve or branch of nerves running into your arm and wrist. Carpal tunnel syndrome is a common example of this, as it occurs when the median nerve becomes compressed as it runs through the carpal tunnel in the wrist. Carpal tunnel syndrome is often caused by constant repetitive movements, such as those involved in typing, using a computer mouse, working on an assembly line or playing a musical instrument. Repetitive activities like these can cause the tissue around the median nerve to swell and put pressure on the nerve. This can lead to a feeling of numbness in hands and fingers as well as weakness, tingling and even pain.
Other common causes of numbness/pins and needles in hands and fingers can be poor circulation or vitamin deficiency. A lack of vitamins B-12, potassium and magnesium can all cause numbness, fatigue or weakness. It is therefore always advised that you visit a doctor if you experience any of these symptoms.