When I scratch them in my sleep or when they break, they often weep a little amber colored liquid
. Also, when I scratch them, more tiny blisters will develop around the original blister, signifying an infection. These broken blisters often leave (little open sores) which can be difficult and slow to heal. These outbreaks seem to come in waves, as I'll often go weeks or even a month or two without a sign of blisters, itching, or infection.