A 19-year-old male was examined for the following tests. CBC Count Ionized Calcium is 4.72 mg/dL Renal function test X-ray Chest PA NCV report MRI of the cervical spine MRI of the brain Creatinine Phosphokinase = 423 H u/L All the test reports are attached. The electrophysiological study of NCV reports suggests " Bilateral Tibial Demyelinating Neuropathy and Left Ulnar Demyelinating Neuropathy ".

What could be the probable diagnosis? How to manage this case further?