Numbness, postural tremors weakness fatigue. is this multiple sclerosis? mri of brain and spine normal, hyperreflexia. low b12 and sjogren's syndrome.

Explanation: You mention two issues, and at age 23, am surprised at this combination, but b-12 deficiency can result in peripheral nerve and spinal cord problems which may explain many of your symptoms. Sjogren's can mimic ms and also cause a small fibre neuropathy which could explain additional issues. Do not need an ms explanation here, as doubtful you have that also. Suggest neurology eval.