Which of the following represents a systemic illness?

Influenza is classified as a systemic illness because it affects the entire body rather than being localized to one area. Systemic illnesses like influenza involve the immune response and can impact various body systems, leading to a variety of symptoms such as fever, muscle aches, fatigue, and respiratory issues. This widespread effect distinguishes it from other options that are more localized or specific in their nature.

Pimples, skin rashes, and minor cuts are generally localized skin conditions that do not affect the entire body. While they may cause discomfort or concern, they do not represent a systemic response. Understanding these distinctions is important in identifying the level of illness and the appropriate treatment protocols in the field of nail technology and beyond.