... for those that are serious/sick of the problem
My experience in using CS, DMSO, Alo, etc. has been less than satisfactory. 
 What has worked for me is a 9-Volt battery with silver probes attached; the  
minute you feel the first sensation and think Oh s--t, stop what you are doing, 
wet you lip with CS,or lick, and place the probes on each side of the sensation 
and zap till a burning sensation, remove and do several more times and continue 
doing such as often as possible for the next few hours.
 I've suffered from this virus since childhood, thanks Mom ! 
 Past three years the worst case has been, when I didn't jump on it 
immediately, [get out of bed, or ever what, seemed more important] was a small 
pin head size eruption.  
 For what ever reason I've not had to deal with one for a year or so, very 
rare, but think it would be wishful thinking that I've eliminated the little 
buggers! ... perhaps it's frighten them ;-) they're very smart and maybe 
looking for a better ploy for VIVA YO.
 The connectors for the 9V bat. can be had at Radio shack, all you have to do 
is attach the silver probes to the wire leads.

larry tankersley; Gainesville,Florida USA