No thoughts.. help?

Maybe it's the lack of sleep schedule or the whole bunch of stress but every time I try drawing and coming up with new character concepts, poof. Gone, I feel like my head is cotton and my idea's ran away.
It's friken terrible, I feel like I have dementia and I can't do anything.
Is there a medical term for this? Seriously, I really want to do the things I love but my brain won't let me..

Spark
•2mo