I use to get sharp pains at the back of

Patient: I use to get sharp pains at the back of my skull (base) that also travelled down my arms to my fingers..lasting no more than 5 seconds -after I coughed. I was just sat here not coughing and I got an almighty searing warm pain at the top of my skull..felt like it was in my brain, then a wave went down my arms to my fingers. the pain was a 7/10. I am now left with a slight pain/faint headache and pain in my jaw area and above. unsure if it’s a trapped nerve or not

Doctor: