What Does This MRI Result Of Arm Indicate?

ive been having extreme pain in muy right arm from my sholuder to my fingers. main pain in the outer area from my shoulder down to elbow. it keeps me up all night and i cant lift my arms or type. im trying to type with left hand. i've seen a neurologist and had mri done. it shows a few dispersed areas of demyelination in the deep white matter of the parietal region