PSI Barbering Practice Exam 2026 – All-in-One Resource to Master Your Certification!

A systemic infection is characterized by its ability to spread throughout the body rather than being confined to a specific area. This type of infection often enters through the bloodstream and can affect multiple organs and systems, leading to a variety of symptoms that are more widespread. Systemic infections can be caused by bacteria, viruses, fungi, or parasites and may require comprehensive treatment strategies due to their extensive impact on the body's functioning.

In contrast, a localized infection remains confined to a specific area, such as a cut or wound, and generally involves localized symptoms like redness and swelling. Opportunistic infections typically occur in individuals with weakened immune systems and take advantage of existing health conditions, while acute infections are characterized by a rapid onset of symptoms and may be either localized or systemic, but they do not necessarily imply that the infection is spreading throughout the body.