Both cellulitis and erysipelas begin with a minor incident, such as a bruise. They can also begin at the site of a burn, surgical cut, or wound, and usually affect your arm or leg. When the rash appears on your trunk, arms, or legs, however, it is usually at the site of a surgical cut or wound.
Even if you have no symptoms, you carry the germs on your skin or in your nasal passages and can transmit the disease to others.
Last Updated February 17, 2009