Which of the following is a systemic feature of osteomyelitis?

A systemic feature of osteomyelitis refers to signs or symptoms that affect the entire body rather than being limited to a specific location. Fever is a common systemic response to infection as part of the body’s immune reaction. In the case of osteomyelitis, which involves an infection of the bone, the presence of fever indicates that the body is responding to this infection.

Localized redness would be more characteristic of a localized inflammatory response rather than a systemic one. Joint stiffness may occur but typically relates to the local impact of the infection rather than a systemic feature. Nausea can be seen in various conditions, but it is not specific to osteomyelitis and does not serve as a definitive indicator of the condition. Therefore, fever stands out as the primary systemic feature in this context.