I got a MRI done over a year ago. The paper lets me know; There is a left middle cranial fossa presumed arachnoid cyst measuring 40 mm with mass effect on the adjacent left temporal lobe. I got this MRI done because my headaches were getting really awful. They are only worse and ive had these headaches for about maybe 3 years. They just keep getting worse. When I went to a neurologist he told me I was depressed and needed to be on suicide watch. I am clearly not suicidal. I decided to take matters into my own hands. I cannot figure out why my headaches are getting this bad. I have a referral out for another MRI as well. Can you let me know what this kind of cyst can cause or do to me and if I need real help.