adhd
"I've used Concerta for 5 years and loved the improvements at first - I became successful, in perfect shape, and did most things extraordinarily well.  My life did a complete 180.  Once unfocused, unmotivated and disorganized, I transformed to near perfection in everything I did.  The price you pay for perfection - I've lost my friends and my social abilities.  I used to be fun and full of life!  You begin to seclude yourself because you are too focused, too mechanical.  You lose weight because your appetite goes away and you are indeed anorexic.  I couldn't sleep, had extreme anxiety, headaches, dry mouth, highs and lows....I can go on and on.  It changes you and you may think it's great but ultimately you lose yourself in the process."