Lately, I've been getting a very sharp, repeated pain in the back left of my head, right at the bottom of my skull above my neck. It happens sporadically. Sometimes it goes away for about a week, but when it does come back, it happens around three times a day. It's a steady throbbing that lasts about five minutes every time it happens. The majority of the time, it's so bad that I literally wince every time and it's very difficult to focus/concentrate on anything because the pain distracts me.
Any idea what this could be/mean?
Any idea what this could be/mean?