I have had headaches since I was 15. Since I was about 20, I tried getting help(taking sinus meds, migraine meds, antibiotics,switching birth control etc.)nothing helped, they have gotten worse. Now I am 26, and about 6 months ago I had the first severe headache, with vomiting. A few days after the first severe headache and vomiting episode, I was in the ER with kidney stones. I saw a urologist, he said I had 5 stones and kidneys full of sand. In the last 6 months, at least once a month, sometimes more I get a severe headache and I throw up with each one. I went to get an MRI, that revealed I have an arachnoid cyst in the posteria fossa. Do you think my kidney problem could be related to the location of the cyst. I am currently awaiting a refferal to a neurologist. Though it is taking a long time, and I am going to have to go out of town. I am worried I wont get to see someone before I do. I have started having other symptoms as well, but I am worried this relationship between my kidney and cyst is rather strange. I have had no prior health problems with kidneys and no family history either. I am a little over 5 feet tall, and weigh about 130. Healthy diet and moderate exercise.