Ask a Neurologist. Get Answers to Your Neurology Questions.
This is Dr. DAvid
you need to see a neurologist as soon as possible
you could have an autoimmune disease
or a pinched nerve in your neck causing weakness in your arm
you may need an MRI scan of your neck and nerve conduction study.
chest xray isn't really helpful
did you have a head and neck CT scan?
MRI scans are better at looking at nerves and disks in your spine.
have you consulted with a neurologist yet?