<s>[INST] Hi. Ok so since i was little i always had this sharp pain in the back of my head. Like if i turn it too fast just right it feels like ive been shot in the head. I thought it was normal but apparently its not. Its on the nape of neck. when it happens, my head jolts the side that it happens on and the pain lasts about a minute. What is this pain? Is it a pinched nerve? [/INST] Thanks for contacting Chat Doctor. You have problem of headache and back pain that after sudden movement may be because of nerve compression problem. Cervical disc problem cause pain after sudden movement. It may cause nerve compression problem. MRI give exact idea about nerve compression. Cervical disc bulging may cause neck pain while sudden movement of neck. This pain can referred to back or head region also. Physiotherapy is helpful for severe back pain because of nerve compression. Consent a physician for further diagnosis. I hope my guidance is helpful to you. Take care. Thanks. </s>