Tests that may be done to diagnose this condition may include:
Blood tests.
Chest x-ray.
Electromyogram (EMG).
MRI of the head, neck, and shoulder.
Nerve conduction tests.
Nerve biopsy (rarely needed).
Acute brachial neuritis diagnosis
Bell's palsy laboratory findings
Ischemic stroke physical examination
Spinal stenosis physical examination
Caplans syndrome laboratory findings
Takayasu's arteritis physical examination
Caplans syndrome physical examination
Neuralgia other diagnostic studies