<s>[INST] Hello, I am having a lot of tingling and numbness in my whole left arm down to my hand. I can t hold anything for a short period of time without the feeling of my arm going. You know that feeling when your foot falls asleep and you move it....well, that s what s going on with my left arm and hand. Can you tell me what you think might be wrong or going on please, thank you .. Ms. Moore [/INST] Dear patient Tingling and numbness on left side hand and arm is mostly due to nerve compression at cervical spine level. Nerves which bring sensation to hand and arm arises from cervical region of spinal cord. Most common reason for compression is disc prolapse. Since tingling and numbness is mostly in hand compression likely is at the level of c5 c6 and c7 levels. I would like to advise MRI of cervical spine with screening of whole spine to confirm diagnosis.  Visit radiology center nearby you and get it done.  Meanwhile, start tab vitamin B12 plus pregabalin 75 mg at bedtime for 7 days.  You need to consult expert spine surgeon with report.  All the best. </s>