Periodic Numbness On The Left Side Of The Body. Need Investigation?
Thanks for your query.
The involvement of the body in numbness which includes the face and half of the body indicates that the problem which is causing is residing the brain and not the peripheral nerves.
I would suggest you go for a MRI scan (Magnetic resonance imaging) of the brain which will rule out any space occupying lesion of any structural deformation which could lead to a symptom like that.
Also do go for nerve conduction studies which will provide detailed information about the faulty conduction.
Both above tests will give both structural and electrophysiological information enough to study the symptom you have and arrive at a diagnosis.
Do consult a neurologist with the above test reports who after examining you will be able to find out the exact cause.
Hope I have answered your query. Let me know if I can assist you further.
Regards,