Final answer:
A local infection is indicated by a lesion containing pus and is confined to a specific area of the body, such as a boil or abscess.
Step-by-step explanation:
A local infection confined to a particular part of the body is indicated by a lesion containing pus. Such an infection is usually contained to a small area, often at the site of an injury or break in the skin, and does not spread throughout the body.
Local infections can vary in their severity and may result in various signs including boils, abscesses, and other pus-filled lesions. For example, acne can lead to purulent skin conditions like folliculitis, while a more serious infection such as necrotizing fasciitis can produce rapidly progressing symptoms and severe tissue damage requiring immediate medical attention.