Greetings docter! Im 20 years old, im getting worried that I might be getting something serious although not sure if its normal or not. Everysingle time when im sitting or laying back with my head stable and move my head even if just slightly, I hear a pop/click sound from the centre of my head/ brain. I get headaches rarely ( ones every month) and seem not to have any effect from it. This sitiuation have been for about a month now, when I was completely blank and deeply thinking about one specific thought, I was so concentrated that I almost forgot to breath, and then when I realised the situation im in everything went black and my brain felt numb for a couple of seconds and seeing everything star like . I think I had massive click sound in my head at that event! Since then, ive been noticing the clicking sound. Maybe its all my imagination, but better be safe than sorry :)