Hi Lori,
Welcome to the NeuroTalk Support Groups!

I'm sorry you've had such a nasty fall and I hope your recovery is fast.

Here is the link to our
Traumatic Brain Injury and Post Concussion Syndrome Forum
It's a busy forum with lots of very helpful and knowledgeable members.

There are quite a number of other posts regarding Arachnoid Cysts scattered around in a number of different forums here. The best way to find them is to do a Full Forum Search

http://neurotalk.psychcentral.com/search.php

If you need any help navigating the forums at all please just post another message and someone will help.

All the best to you.