For over a year now i have been getting a constant throbbing in my upper left arm just below my shoulder, it has recently become worse?

Doctor can evaluate: Such symptoms can be further evaluated. One can start with a primary care doctor, who can refer to an orthopedic or orthopedic/spine doctor. A neurologist or a physical medicine doctor may also be helpful. A physical medicine doctor is a physiatrist or pm&r doctor, who is knowledgeable in nerve pain, nerve compression, muscle problems, and movement disorders. X-rays may be needed.