<s>[INST] 1 of my very close has the following problem. i will explain as far he has told me. spines c5,c6 to c7 or c8 has been detected problem. Doctor said that an disc has been moved. more over the doctor has said that go for physiotheraphy and at the same time continue with some medicine he has prescribed mean time let us ask an neuro specialist advice for nerves problem. could u explain me what his actual problem is [/INST] Tithe spine is the bone in mid-line of back.  It is not single bone - many pieces stacked on each other.  In between pieces, there is disc. If disc becomes weak, bone may slip.  The spinal cord is inside the spine. Nerves go out between the pieces. So slip may press the cord or the nerve.  The nerve may become weak. Pressure on cord can cause paralysis. So you have to see nerve specialist - to prevent or treat. Good luck </s>