Hello - thanks for asking your question.
You note several symptoms including upper arm discomfort and stiffness in your fingers. MRI on your back showed mild disk bulging in the L4-5 region. You also note several referrals including to a neurologist and orthopedic surgeon.
Without examining your, it is difficult for me to say what is going on.
It is possible that the back problem may be causing all the other symptoms. However, because the symptoms are so generalized (i.e. affecting your legs, hands, fingers), the reasonable step (as you are doing) is to make sure that there is no rheumatological disease going on.
If not already performed, I would perform an MRI of the shoulder to make sure there is no tendon tear preventing you from raising your arm.
As for evaluating for rheumatological diseases, possibilities include fibromyalgia, rheumatoid arthritis, lupus, hypothyroidism, or inflammatory myositis. I would obtain a sed rate (looking for inflammation), ANA level (screening for lupus and other rheumatological diseases), rheumatoid factor (screening for rheumatoid arthritis), muscle enzymes (looking for diseases causing muscle inflammation), thyroid panel and electrolytes. A rheumatologist can coordinate these tests.
Further specialized testing including electrodiagnostic testing can be discussed with your neurologist or personal physician.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Thanks,
Kevin, M.D.