Neuropathies are damage to the peripheral nerves (such as, for example, the sciatic nerve) that may be caused by degeneration, injury, or compression of the nerve due to various causes, such as:
herniated intervertebral discs (disc disease) or lumbar stenosis
muscle spasm of the back or pelvic muscles
physical injuries
poor posture
surgical procedures
diabetes mellitus
infections, such as herpes zoster
undetermined cause
Depending on which nerves have been affected, neuropathies have symptoms such as mild or very severe pain in the lower back and leg (sciatic nerve), numbness or tingling in the extremities, neck pain (cervical nerve), wrist pain (median nerve), muscle weakness, and others.