Which of the following is a common sign of a potential infection?

A common sign of a potential infection includes symptoms such as fever, redness, and swelling. These manifestations are part of the body's natural immune response to infection. When the body detects harmful pathogens like bacteria or viruses, it triggers an inflammatory response. This response can result in localized heat and redness as increased blood flow reaches the affected area, leading to swelling due to fluid accumulation and immune cell activity.

Fever is also a key indicator of infection, as it represents the body's attempt to create an environment less favorable for pathogens while enhancing the immune response. The presence of these signs—fever, redness, and swelling—can alert healthcare providers and patients to the possibility of an underlying infection, prompting further evaluation and treatment.