Sure, go to a neurologist. The spasms and aches in your arm and upper chest are the from nerves that are coming out of your cervical spine. But the pain in your hip and upper leg are from your lower spine somewhere OR the hip joint itself. Anyhow, since the risks of the new block scheduled in two weeks are worrisome to you, seeing a neurologist would sort of act as a second opinion, so you could put off that block until you can get in to see the neuro.
Those appointments are sometimes hard to get, that is, you may have to wait as much as two months to get in there. I am not sure what the treatment is supposed to be for someone with degenerative disk disease... usually a hurt spine is given moderate treatment, to include rest, medications, maybe a brace or collar to support the back or neck, and medicines, plus eventually physical therapy, but for you, the latter might make it worse. If those don't work, surgery sometimes becomes an option. So, if later on surgery comes into the picture, all the more reason to seek a second doc to have on the case at this stage.
When someone comes into an ER with a broken bone, an orthopedist is called in. When a person has seizures or brain injury, a neurologist is called in. But they each understand the spine's anatomy as well as the other. In your case, your spine is goofed up, but you have a nerve component to your disk disease, so that's how come it's okay to go to the neurologist, in addition to the orthopedist.
Thank you for your question. Most likely, your symptoms may be due to Cervical spondylosis or due to nerve irritation in the cervical (neck) spine because of injury/prolapse where contact between the edges of the vertebrae can cause neck pain. In few people, this pain may be referred and perceived as occurring in the back of head, shoulders, arms or chest, rather than just the neck. Other symptoms may include vertigo, nausea (dizziness) that you felt. Other symptoms are like neck pain and stiffness can be intermittent. It will be best that you consult a neurologist who would like to prescribe painkillers, steroid and muscle relaxants. Other treatments could be cervical orthosis such as a soft cervical collar/stiffer neck brace to restrict neck movement. In addition, the doctor may also suggest cervical traction, if condition is severe. Hope this helps.