@Thucy
Everyone's narcolepsy is different, but I can try to explain how mine "works." I spent the better part of four months this year up in Maryland to have doctors finally make sense of it for me and this is what I understand of it.
I don't get anywhere near the normal amount of stage 4 and 5 sleep. Stage 4 is the deep, delta wave recovery sleep that lets you feel refreshed in the morning (essentially recharging your body) and stage 5 is of course REM sleep (essentially recharging your mind). Memory transitions and all other sorts of important things happen in REM sleep, dreaming too, and it's about 15-20% of your sleep cycles.
So when you sleep for 8 hours, 20 minutes, you'll go through about 5 full sleep cycles. That's just under an hour's worth of stage 4 and 5 usually. (Don't quote me on this stuff.)
When I sleep for 8 hours, 20 minutes, I go through about the same amount of sleep cycles (usually a little shorter), except I get maybe 10 minutes worth of stage 4 and my stage 5 sleep isn't really stage 5. Right when I should hit stage 4, I have a seizure (not the shaking kind) and my brain goes straight to REM sleep, except it's like an HDD with the write head removed. I'm spinning, but no dreams are being had and hardly any long-term memories are recorded. My brain essentially cooks instead of cools.
Now, since I wake up with both my body and mind feeling as if I pulled an all-nighter, I look and feel like I did. When I doze off, my body will throw itself into REM sleep almost immediately, but I'll be so easily wake able that a professor changing slides or the falling sensation of my chin hitting my chest will wake me. This is pure torture. A 50 minute lecture can be close to 100 microsleeps. Like revving an engine with the clutch pushed in and then letting it go to grind the gears and stall. Eventually, against my own will, my brain and body will just shut down and I'll fall asleep wherever I am and be almost impossible to wake up. This can happen standing, driving, even once during sex.
But I'm STILL not getting rest. Certainly not making up for what a normal person needs. So after 5-6 days, I'll crash. My body will just fall asleep and stay that way for over a day sometimes. I'll sleep for 24, 36 hours and wake up finally feeling like I had a good night's rest.
Cataplexy appears in less cases of narcolepsy, but its the one everyone remembers. What it is strong sudden emotion, like anger, joy, or fear, can cause a person with narcolepsy to basically faint and have microsleeps. For me its mostly being startled. Horror films or someone jumping out of a closet can mean me hitting the floor instantly. It's kind of embarrassing.
But also really bad for my heart. Since narcolepsy goes wildly undiagnosed through childhood (mine started at 13 and I didn't see a doctor about it until uni), that many years of sleep deprivation and stimulant abuse (I was popping caffeine and amphetamine multiple times a day and still slept THROUGH grade school) can cause pretty bad cardiovascular development problems. I developed a mildly serious heart arrhythmia and until recently, through better exercise and diet, was sleeping with an insanely annoying heart monitor. I still can't really have stimulants in the morning, they don't work except to get my heart in a funk and really make me sick, but also since my catapletic events are being treated (to keep me awake), now what happens is intense chest pain. Like being stabbed with an icicle and having to wait until it melts. It's still less dangerous than passing out, but its definitely not fun.
The treatment I've been going through is called Sodium Oxybate, which among other things, produces GHB in the system fairly rapidly. One dose affords me 4 hours of "near-normal" sleep cycles, so I wake up four hours later and take another. It takes some getting used to, but now I don't even need an alarm clock, I just wake up every 4 hours. The drug is super easy to abuse and if I've eaten or god-forbid had anything to drink close enough to going to sleep, I'll get extremely loopy/retarded and sick to my stomach. Other than that, sometimes I'll wake up and have INSANE hallucinations. I'll wake up into my dream, know I'm awake, but still have to dream. I'll also not be able to move, sometimes complete paralysis for 10-15 minutes.
It's been almost half a year since I started and the results as far as school/work/social go are tremendous. I actually have a memory and concentration, can drive a car (though I still hate to), and generally lead a normal existence. Ten years of narcolepsy can lead to some other pretty fucked up neurological effects like depression, so being able to finally pinpoint and tackle those sorts of things really helps too.
I've only ever really told my family and a few friends, but lately I've been super curious to see how my story relates to others dealing with the issue, so I thought I'd ask here.