Hey guys for the past 4 months I've been having this very strange pop/zap like sensation to the back of my head on the right side. It happens when i move my head in a certain way to the left. It's not painful at all and doesn't always happen but it's very scary and it makes me think there's something wrong with me. I've been to the doctors 4 times but they keep telling me they have no idea what is and try to prescribe me anti depression pills. The popping sensation kind of feels like there's a rubber band in my head and some one is softly pulling it and letting go. Please any feedback would be much appreciated.