Hi,
"Impetigo is an infection of the skin. Any wound that doesn't heal, or a wound that increases in size, usually has become infected.
The infected sores:
* are less than 1 inch in diameter
* start as small red bumps, which rapidly change to cloudy blisters, then pimples, and finally sores
* are often covered by a soft, yellow-brown scab
* may be draining pus.
Impetigo often spreads and the sores increase in number from scratching and picking at the initial sore.