Causes

Peripheral nerves can be damaged in several ways:

• Injury from an accident, a fall or sports can stretch, compress, crush or cut nerves.
• Medical conditions, such as diabetes, Guillain-Barre syndrome and carpal tunnel syndrome.
• Autoimmune diseases including lupus, rheumatoid arthritis and Sjogren's syndrome.

Other causes include narrowing of the arteries, hormonal imbalances and tumors.