What kind of infection is small and confined, such as a pimple?

A small and confined infection, such as a pimple, is classified as a local infection. Local infections occur when pathogens invade and multiply in a specific area of the body, leading to symptoms that are localized to that particular spot. In the case of a pimple, the infection involves the hair follicle or skin pores, resulting in redness, swelling, and possible pus formation in a contained area.

This is in contrast to general infections, which spread throughout the body and affect multiple systems. Systemic infections also disseminate through the bloodstream, potentially impacting various organ systems and leading to widespread symptoms. Opportunistic infections typically occur in individuals with weakened immune systems, taking advantage of the host's compromised defenses, rather than being confined to one area.

Understanding the distinction between local infections and other types of infections helps healthcare professionals appropriately diagnose and treat various medical conditions.