When I asked my family physicain about this when I have this problem he told me the technical term for this is called - sleep depravation

Sleep depravation can happen to anyone anywhere regardless of if the person has a mental disorder or not and is on medication or not and the only reason behind it is that the person is not getting enough sleep.

I am not bipolor and not on psychotropic medication and have no interest in obtaining psychotropic medication but when I get tired I see snakes and spiders.