Brachial plexus. C6 and C7 nerves affected most frequently.<unk>  most often is caused by mechanical compression of a nerve root usually at the exit foramen or lateral recess. It may be secondary to intervertebral disk herniation (most commonly at C7 and then the C6 level), degenerative disc disease, osteoarthritis, facet joint degeneration/hypertrophy, ligamentous hypertrophy, spondylolisthesis, or a combination of these factors. Other possible causes of<unk>  include neoplastic disease, infections such as shingles, HIV, or Lyme disease, spinal epidural abscess, spinal epidural hematoma, proximal diabetic neuropathy, Tarlov cysts, or, more rarely, sarcoidosis, arachnoiditis, tethered spinal cord syndrome, or transverse myelitis. Repeated, longer term exposure (5 years or more) to certain work-related activities may put people at risk of developing lumbosacral<unk> . These behaviours may include physically demanding work, bending over or twisting at the trunk, lifting and carrying, or a combination of these activities. Less common causes of<unk>  include injury caused by tumor (which can compress nerve roots locally) and diabetes (which can effectively cause ischemia or lack of blood flow to nerves).
Radiculopathy
Tennis elbow
Myopathy
Adhesive capsulitis of the shoulder
Diabetic neuropathy
Autonomic neuropathy
Tropical neuropathy
Neurocristopathy