Hi there,
Angelita has taken the words right out of my fingers so I won't repeat her.
We have all found Neuros loath to commit to arachnoid cysts causing some of our problems. I go back for the first time in 5 years after an MRI for a different brain problem, but my other conditions have deteriorated since last MRI in '07 and I WILL be questioning growth of cyst and affect it must be having on me.
I must caution you, though. Don't blindly blame your cyst and ignore any other possible causes. Let your new Neuro find the answers which gives you the best treatment so you can return to a normal life asap. Try to build up a level of trust.
I hope this can be resolved quickly,

Dave.