I've had those too! My head does that sometimes, and it's usually time to get meds adjusted when it's been more than a few days of it. They said my tegretol blood levels were far too low in hospital and the shocks went away when they upped it for a few days. I have the shocks throughout my body frequently, but they are from permanent neck damage. C4 bone on bone, c3 had a membrane last they looked. I won't take pain pills, because they don't work