I think there is no deceise like this.. Just another "sickness" made up by psychiatrics to make pills and sell them :roll:
If you dont sleep enough continiously, get some sleep and have a vacation in some other place than you live to change sorrownding and it will fix.
If you sleep too much - get a f*ckin job! Manual job is the best
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"...free your mind and the body will follow..." - THE MATRIX