a bit of clarification on terms:
meth psychosis is commonly taken to mean those behaviors that can be experienced associated with a meth run, but not as often the extremely unlikely possibility of long term psychological problems.
new users who are plagued by <some random problem, bug, danger> that is <everywhere, on your skin, under your skin> but can only be seen <out of the corner of your eye, under a microscope, moving> and who then begin to take countermeasures <skin picking, tearing things apart, fighting back, panicking> only 6 hrs into a run can be said to have meth psychosis which has nothing at all to do with sleep dep.
meth turns up the paranoia, sleep dep creates shadow people, tolerance kills the good but leaves you with 50% of the bad.