narcolepsy
"For the past few years, my friends all made fun of me for how many naps I took.  Eventually, I was not able to leave very far from my house lest I get a sleep attack and need to lay down immediately.  I've slept everywhere - from the bathroom floor at my work (before I was fired for leaving early so many times to sleep) to friends cars during the middle of the day.  After FINALLY getting a narcolepsy diagnosis (good luck getting insurance to pay without it - even the Patient Assist Program won't send you meds unless your diagnosis is documented) I am now experiencing how normal people must live.  As long as I take the Provigil at the exact times I need to (100mg at 8am, noon, 4pm) I can work, making me feel like an asset to society again."