They don't understand.
Why?  They ask.
It's not normal.
It's not controllable. 
It's the feeling.
The doors close on their own.
You're left in the dark.
The wind is howling, and you're heart is beating super fast.
The thought turns into a feeling.
The feeling takes over the brain,
The brain takes over the body.
The body just wants to get it out.
Anything and Everything set it off.

Pill popping pill popping always asking for more.
Don't take too many or you won't make it out the door.
.