I've had it twice 
Didn't eat, didn't drink, didn't get out of bed for a week each time, then another week just getting back to normal afterwards...
The first time I didn't know if I was awake or asleep and was having hallucinations, not good...

Didn't eat, didn't drink, didn't get out of bed for a week each time, then another week just getting back to normal afterwards...
The first time I didn't know if I was awake or asleep and was having hallucinations, not good...