Wow, is there an illness for this? I get crazy tired sometimes out of nowhere and my sleeping times are changing. Nowadays I sleep anywhere between 9pm-2am. Someimtes in bed, I really want to SF chat on my iphone but there's no app or java =[
Since you've noticed things are starting to get strange with your sleep schedule, it's a good idea to start a log to keep trap of what's going on. Get yourself a notebook and keep track of the following things everyday,
Time you went to bed:
Time you actually fell asleep (if you remember):
-note any disturbances during sleep if applicable, if you got up a bunch of times etc.
Time you woke up:
Having this will help your doctor a great deal in determining what the trouble is.
Good luck. Circadian rhythm disturbances can be very rough to deal with, I know. :smile:
I used to keep i log of sleeping times, but i found i got obsessed with how much sleep i was getting and so feeling worse.
It varies with what sort of problem you have but i was told not to think about it too much if possible, i still sleep crap but don't worry about it so much.