anxiety
"I have been through many many years of anxiety. Couldn't drive a car, couldn't sit through a church service, torment. This drug helps me focus and function. 
People abuse it but it's a Godsend for people with real issues. Not everyone is a drug addict that needs xanax. I am 50 and a female and my life's been limited since a trauma at childhood. I have post traumatic stress disorder and anxiety to severe limits."