what your probably experiencing is the ''die off'' effect...you want to drink alot of water throughout the day while zapping and take colon cleansers to get all that junk out of your system or you'll just reabsorb it.
as far as visable sores and getting them to heal you might want to try taking h202 baths... Fill the bathtub with lukewarm water up high enough so your legs are submerged under the water then add about 1 1/2 to 2 cups of 35% food grade hydrogen peroxide to the water and sit in it for 30 minutes.

youll become addicted to it as its very relaxing and your body absorbs all that oxygen and it also will eliminate skin blemishes over time..

as for finding 35%h202,...all hydroponic stores carry the stuff and its half the price of what you would pay on the net...I get a gallon for $27.

The sores you have where you place the zapper are from your body being very acidic or your skin is sweaty and increasing the conductivity of the current from the zapper....
try to move the zapper around to diiferent locations every couple hours or so and dont wrap it tight,....when I use a velcro band to fasten it to my ankle I get burn marks but never when I just throw it in my sock.