halllo dear friend
i have studied you case
In cervical disc you need x ray cervical spine
agrrivates any kind of pain so just relax
have you done MRI OF you spine ?
did you injured ? do u smoke?
pain is there for whole time or only on movement or exertion
you need neurotropics like pregabalin
you should change ur posture while sleeping, keep arm straight with out presssure on it
do daily neck exersizes start some shoulder shrugging exercise ,
you may need MRI cervical spine
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