Hello and welcome to HCM
Presence of tingling
and hurting in head along with same complaints in arms suggest a neurological disease. A dark shadow on brain MRI
does not convey much.
I can only understand that there is some kind of focal (localized) disease process in brain which is responsible for all the symptoms. This disease process seem to involve the nerves supplying the arms.
It could be an infective, inflammatory , degenerative, space occupying lesion.
i advice you to see a specialist (neurologist
can be due to the same disease process or even due to low hemoglobin
Dr Shailja P Wahal