What kind of diseases affect the entire body?

The term used to describe diseases that impact the entire body is "systemic." Systemic diseases affect multiple organs or systems, rather than being confined to a single area or part of the body. Such diseases can disrupt the overall homeostasis and lead to generalized symptoms throughout the body, indicating that they are not localized to one specific site of infection or injury.

For instance, conditions like diabetes or systemic lupus erythematosus have widespread effects, influencing various bodily functions and leading to a range of symptoms that affect the overall health of the individual. This is significant for both diagnosis and treatment, as systemic diseases require consideration of the entire body rather than focused treatment on a specific site.