narcolepsy
"Works wonders for me.  I still occasionally have some daytime sleepiness, which I can handle with a quick 5 minute nap, but it has gotten rid of the Cataplexy.  I really had a problem with symptoms of cataplexy.  If I laughed, got mad, or was emotional in any way, I would end up on the floor.  I rarely have any of these symptoms now, which is a miracle for me.  I do have two side effects, one is that I can become pretty irritable and the second is that I get a bit more aroused."