I have a few questions relating to headaches on the right side of my head, which I have been experiencing myself a lot over the last few months. My main question is about the root cause of such headaches. I looked this up on some medical sites on the web, and they all have long lists of possible causes, most of them not serious, thankfully. Now, I am hoping some information is available about how to find out what is causing your particular headache? Out of 10 to 15 possible causes, how will I know which one is causing my headaches?