I was just told last night, that I have a cyst in my skull at the back of my head. It's quite large, but is supposedly just filled with fluid. I haven't seen a neurosurgeon about it yet, because I just found this out last night. It hasnt changed much in the last year and a half, other than developing scar tissue. It's putting pressure on my brain, and the neurologist at the ER said it is most likely the cause of my severe migraines. I'm very concerned about this, seeing as how I'm only 17 years old. I'm honestly scared. Are there any risks that come with this problem?