I have headaches every day, all day and night, sometimes they lighten up after being awake for six or seven hours, but they return after I eat. Mostly the headaches seem like sinus, in the forhead, behind left eye, pain in temples, head feels like pressure,and pressure in ears, and sometimes teeth hurt. Back of my head hurts near brain stem, and I get a tension type lump in my neck on the left side in the back. But I also get pain in the lower left side of the back of my brain, where there is no brain, because of a bleeding aneurysm years ago. I crave sugar, and sugar seems to alieviate the headache if I eat alot of it. I am confused all the time, and my sinuses burn and my head hurts all the time. I have had three or four brain surgeries, and multiple aneurysms that burst, with atm grade 4 which was removed. I have a shunt that may or may not be working after eight years.What if anything would you suggest. I am a vegan vegetarian, could my diet be causing this? Also I have a serious lack of thirst, I am almost never thirsty, I have to force about 8 ounces of fluid per day, if I remember. Cold alot of the time. I have searched the internet until I am overwhelmed by possibilities, and even more confused, looking for anything that can help.