[Onimarus]

Can someone tell me, (or link me to), all of the general side-effects to SSRI drugs, (specifically Lexapro), and the withdraw symptoms accompanied to these drugs if one were to..lets say...go cold turkey after four years of taking Lexapro?
I'm trying to figure out why one of my friends has memory problems; often forgetting who I am, along with people who have been with her since she was born. The only assumption I have is Lexapro withdraw, but I'm still not 100% sure.