in upper back could be due to slight compression of cervical nerve
roots i.e nerves that are supplying your upper back. This could be due to curvature loss as sighted by your MRI.
chronic Dry cough
can exacerbate symptoms by increasing pressure.
Your cough problem should be properly diagnosed and treated.
Since the MRI was done long back you should get yourself evaluated for your tingling problem clinically as well as radiologicallyi.e MRI.
You should take treatment to resolve cough accordingly and go for physiotherapy
for improving your symptoms.
I hope this will help