The laws regarding leprosy in Leviticus seem to play a part in end times. 
In Lev 13:42 it speaks of a bald forehead and states that if there is a sore 
in the bald forehead it is leprosy. He is considered unclean--utterly unclean 
"his plague is in his head." This emphasis of the head and forehead made me 
think of the mark of the beast. If someone has the mark in his forehead (or 
on his body for that matter), he is considered unclean. All unclean people 
are to live outside the camp, alone, away from everyone so that they don't 
pollute those who are "clean." Their clothes are rent, his head bare and he 
puts a "covering upon his upper lip, and shall cry, Unclean, unclean" (Lev 
13:45). They are to be outside of the camp for a period of seven days before 
being inspected again. This goes along the same lines as the wormwood thing. 
Again, a period of testing (this time for 7 days). 

For anyone interested, the particulars of the parallels of leprosy and the 
mark of the beast are on my web page under leprosy.

B'bye,
Moza