I have had severe headaches for a long time. It mostly starts when I wake up and stays for the entire day. No painkiller or anything works most of the time. The pain starts behind the eyes and spreads to the back of my head. Bright lights make it a lot worse. Not eating lunch on time can also lead to these headaches. This has been going on for a few years. I can also feel blood flow on my forehead whenever I have these headaches.