What type of infection involves a pathogen that has spread throughout the body?

A systemic infection is one that spreads throughout the body rather than being confined to a single area. This type of infection typically occurs when pathogens, such as bacteria or viruses, enter the bloodstream and can affect multiple organs or systems. Symptoms of systemic infections can be more severe and may include fever, chills, fatigue, and other systemic manifestations. Understanding the difference between localized and systemic infections is crucial, as localized infections are confined to a specific area, whereas systemic infections require a more comprehensive approach to treatment due to their widespread effect on the body.