Dear friend, welcome to HCM.
many cases of arm pain
, especially if shooting or electric like, pins n needles, are due to nerve
compression at the exit from bony spinal canal
, in the neck.
so we do an MRI of the relevent spine to see for any compressive radiculo-myelopathy
there as cause of pain.
the nose bleed looks totally unrelated.
are your arms swollen ?
is the pain constant or episodic?
what other tests have been done?
take care and keep me posted on your progress.