Suggest Remedies For Numbness And Tingling Sensation In Right Arm And Thumb

Hi Dr, my husband complained of some pain in right shoulder almost two weeks ago. We thought he had pulled a muscle while exercising. But last Thursday he felt numbness in right thumb so we went to see neurologist. He said it was cervical spondolysis and found his vit D and B12 really low. He stated my husband on supplements, an anti-inflammatory and some basic neck exercises till MRI gets done. However, last night he couldn t sleep a wink coz his entire right arm was sleeping/ tingling/ had pound and needles. We spent the night in ER and they did brain MRI which thankfully was ok. I am not sure what to do next and esp what to do to relieve numbness in thumb and thinking/ sleepiness in right arm. Pl advise.